{"id":146,"date":"2021-12-06T15:24:06","date_gmt":"2021-12-06T15:24:06","guid":{"rendered":"https:\/\/warby-blog.local\/?p=146"},"modified":"2026-08-13T11:52:47","modified_gmt":"2026-08-13T15:52:47","slug":"a-glossary-dedicated-to-all-things-eyewear-and-eyecare","status":"publish","type":"post","link":"https:\/\/www.warbyparker.com\/learn\/a-glossary-dedicated-to-all-things-eyewear-and-eyecare","title":{"rendered":"A glossary dedicated to all things eyewear and eye care"},"content":{"rendered":"\n<hr class=\"wp-block-separator is-style-wide screen-reader-text\" id=\"accessories\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Accessories<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To keep your glasses in tip-top shape, we\u2019ve got accessories for any scenario\u2014the traveling glasses, the smudgy glasses, the&nbsp;<em>I\u2019ve-got-lots-of-glasses-I-forgot-about-this-pair-of<\/em>&nbsp;glasses, and more. Keep \u2018em clean, keep \u2018em safe!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Acetate<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Acetate\u2014or, more specifically, cellulose acetate\u2014is the caviar of plastics. It\u2019s durable, hypoallergenic, and capable of holding exceptionally rich colors, which makes it an ideal material for eyeglasses. It\u2019s our signature material.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Add power<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is a piece of information that appears on your&nbsp;<a href=\"#prescription\">prescription<\/a>. It refers to the added magnification power you need to see clearly close-up.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Amblyopia<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Amblyopia is an inability to see clearly through one eye. It arises during childhood, typically when the nerve pathway between the brain and eye doesn\u2019t develop quite normally, and for this reason the eye doesn\u2019t \u201clearn\u201d to see correctly. Amblyopia is sometimes referred to as \u201clazy eye\u201d&#8230;but it\u2019s not very nice to call anything \u201clazy,\u201d including your eye. So we prefer the scientific term.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"anti-reflective-coating\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Anti-reflective coating<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">All Warby Parker lenses are coated with a high-quality super-hydrophobic treatment. This step is especially important for those who work with computers\u2014and it also keeps your glasses looking so fresh \u2018n so clean-clean.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"arm\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Arm<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Also known as the temple, this is the part of your glasses that runs alongside your head and holds them in place.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\" \/>\n\n\n\n<h2 id=\"astigmatism\" class=\"wp-block-heading\">Astigmatism<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Astigmatism is a common optical condition which results in blurry vision (and, if uncorrected, sometimes a headache). It results when the curve of your cornea is slightly irregular in shape, which prevents light from focusing properly on the back of the eye. This prevents you from seeing with perfect sharpness. The good news: A pair of glasses can help compensate for astigmatism.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\" \/>\n\n\n\n<h2 id=\"autorefractor\" class=\"wp-block-heading\">Autorefractor<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is a machine used to determine what level of vision correction is right for you. In simple terms, it shines light into your eye and measures how the light changes. An autorefractor helps provide an ultra-accurate baseline for ophthalmologists or optometrists to work from.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\" \/>\n\n\n\n<h2 id=\"axis\" class=\"wp-block-heading\">Axis<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cAxis\u201d is the number on your prescription that determines the direction of your astigmatism correction. The&nbsp;<a href=\"#cylinder\">cylinder<\/a>&nbsp;and the axis always go together\u2014you can&#8217;t have one without the other!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"base-curve\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Base curve in contacts<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sometimes base curve is also included on a contact lens prescription which helps the lens fit properly. This measurement always falls between the numbers 8 and 10.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\" \/>\n\n\n\n<h2 id=\"blue-light-lenses\" class=\"wp-block-heading\">Blue Light Lenses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Firstly, blue light is a subset of light within the visible light spectrum; it\u2019s emitted by the sun as well as screens on computers, phones, and other electronic devices. Our blue-light-filtering lenses, well, they filter out a higher percentage of blue light than any other optical lenses we offer. Add blue-light-filtering lenses to any frame for $50.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\" \/>\n\n\n\n<h2 id=\"cat-eye-frames\" class=\"wp-block-heading\">Cat-eye frames<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cat-eye frames are a shape of frame that swoop upwards, like\u2026um\u2026cats&#8217; eyes. (You saw that coming.)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A woman named&nbsp;<a href=\"http:\/\/www.nytimes.com\/1999\/08\/21\/arts\/altina-schinasi-miranda-92-designer-of-harlequin-glasses.html\" target=\"_blank\" rel=\"noreferrer noopener\">Altina Schinasi Miranda<\/a>&nbsp;is credited with inventing the first cat-eye-like shape in the 1930s. Miranda was a window display designer in Manhattan who thought most glasses were hideous and unsuitable for fashionable ladies. Inspired by harlequin masks she\u2019d seen in Venice, Miranda got creative and designed a pair of glasses that mimicked the masks. (She snipped the first prototypes out of paper.) Fast-forward a few years and the new style of glasses is suddenly in vogue AND in&nbsp;<em>Vogue<\/em>.&nbsp;<a href=\"http:\/\/www.fashiongonerogue.com\/wp-content\/uploads\/sites\/3\/2015\/03\/marilyn-monroe-how-marry-millionaire-glasses.jpg\" target=\"_blank\" rel=\"noreferrer noopener\">Marilyn Monroe<\/a>&nbsp;wore them,&nbsp;<a href=\"http:\/\/4.bp.blogspot.com\/-xqX3d8joNpQ\/UweaXLMy9LI\/AAAAAAAARZQ\/7PLiPqjE0Ns\/s1600\/nina+simone+1950s+cateye+sunglasses.jpg\" target=\"_blank\" rel=\"noreferrer noopener\">Nina Simone<\/a>&nbsp;wore them,&nbsp;<a href=\"https:\/\/s-media-cache-ak0.pinimg.com\/originals\/b2\/c5\/7e\/b2c57eb39814bc47743cbf05205b67f5.jpg\" target=\"_blank\" rel=\"noreferrer noopener\">Brigitte Bardot<\/a>&nbsp;wore them\u2026all the cool girls. Now we call them cat-eye frames. You can wear them even if you\u2019re more of a dog person. It\u2019s allowed.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\" \/>\n\n\n\n<h2 id=\"cellulose-acetate\" class=\"wp-block-heading\">Cellulose acetate<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">See&nbsp;<a href=\"#acetate\">acetate<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\" \/>\n\n\n\n<h2 id=\"color-blindness\" class=\"wp-block-heading\">Color blindness<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Individuals with color blindness perceive colors differently from the way most of us do. It\u2019s very common, and the degree of color blindness can range from mild to severe. (Those with very mild color blindness might not even know that they have it.) It\u2019s usually a genetic condition, meaning that you are born with it. Because inherited color blindness is carried on the X chromosome, it affects more men than women. It is estimated that about 8% of all men and 0.5% of all women have some form of colorblindness.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"colossal-squid\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Colossal squid<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The colossal squid is a frightening globular invertebrate that lives in the deep ocean and is about twice the length of a school bus. Their eyes are bigger than footballs. (Creepy.) Even our widest frames will not fit this creature.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"contacts\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Contacts<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re anything like us, you like to have options galore. In addition to our very own contact lens brand,&nbsp;<a href=\"https:\/\/www.warbyparker.com\/scout\" target=\"_blank\" rel=\"noreferrer noopener\">Scout<\/a>, we\u2019re happy to offer a variety of contact lenses to accommodate a greater range of prescriptions and preferences.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"cylinder\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Cylinder<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This piece of information appears on your&nbsp;<a href=\"#prescription\">prescription<\/a>. It refers to the lens power needed to correct for an astigmatism. The cylinder and&nbsp;<a href=\"#axis\">axis<\/a>&nbsp;always go together\u2014you can\u2019t have one without the other!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"demo-lenses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Demo lenses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you order a&nbsp;<a href=\"https:\/\/www.warbyparker.com\/home-try-on\" target=\"_blank\" rel=\"noreferrer noopener\">Home Try-On<\/a>, you\u2019ll receive glasses fitted with demo lenses. These lenses have no prescription\u2014they\u2019re for \u201cdemo purposes\u201d only! (Like looking out of a window.) When you place an order, we\u2019ll customize a fresh pair of glasses with your prescription.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"department-of-motor-vehicles\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Department of Motor Vehicles<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Department of Motor Vehicles, or DMV, is a place where people who love to wait in lines can meet and mingle with other people who are passionate about waiting in lines. Just kidding. (Sort of.) In order to drive a vehicle in the U.S., you must have a visual acuity of at least 20\/40, with or without corrective lenses. Many DMVs allow you to take a vision test right at the office, but you can also get a vision test report completed by your friendly optometrist, optician, registered nurse, physician, etc. FYI: Our optometrists are happy to do this for you in select locations.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"diameter\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Diameter<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You may find a diameter measurement included on a contact lens prescription, which is just the width of a contact lens in millimeters. (Most contact lenses are between 13 and 15 mm wide.)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"dilation\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Dilation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Eye care professionals will sometimes dilate your pupils during an exam to get a better look at your retina. This simply means that your pupils will be widened (or dilated), usually using special dilating eyedrops.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The downside of getting your eyes dilated is that it makes your vision blurry and your eyes extra-sensitive to light for a few hours, or sometimes a bit longer. Sunglasses help a bit. (Safety tip: It\u2019s not a good idea to drive for several hours after your dilation.)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"diopter\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Diopter<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A diopter is a unit of measurement, like \u201cgram\u201d or \u201counce.\u201d Instead of measuring mass, however, it measures the refractive power of a lens\u2014in other words, it measures optical power.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"expiration-date\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Expiration date<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As you age, so do your eyes. (Ugh, why.) Because we are responsible upstanding citizens, we can&#8217;t start making your glasses without seeing your valid prescription with our own two eyes. That\u2019s why it\u2019s important to keep your&nbsp;<a href=\"#prescription\">prescription<\/a>&nbsp;updated \ud83d\ude42<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"extended-sizes\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Extended sizes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">After two years of researching, designing, and testing new widths, we developed a series of&nbsp;<a href=\"https:\/\/www.warbyparker.com\/more-widths\" target=\"_blank\" rel=\"noreferrer noopener\">extended sizes<\/a>\u2014extra narrow, narrow, medium, wide, and extra wide\u2014and applied them to our bestselling frames. In short, it means more fits for more faces.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"eye-drops\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Eye drops<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Eye drops = liquids that you apply to your eyeballs for various purposes. It takes some practice to apply eye drops, because putting fluid directly onto your eyeballs does not exactly feel natural. You can get different kinds of drops for different purposes: itchy eyes, dry eyes, etc. Some drops are medicated to treat glaucoma, eye infections, and other conditions. It\u2019s best to ask your friendly doctor what drops are right for you.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"eyes\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Eyes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The circular thingies on your face that give you an excuse to wear cool glasses. The eye is an insanely complex organ, but it helps to think of it like a camera: It has a lens, it collects incoming light, and it provides an image that your brain interprets.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"eyestrain\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Eyestrain<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You know when it\u2019s New Year\u2019s Day and you\u2019re excited about your resolution to \u201cbe more healthy\u201d and you do 100 vigorous sit-ups and the next day your stomach hurts and you decide to stop doing sit-ups forever? Eyestrain is like that, but for eyes. If you use your eyes intensely or in certain circumstances\u2014like staring at your computer for too long, or reading a lot of small print\u2014you may get eyestrain. If you have continual eyestrain, we recommend getting your vision checked (you might need glasses)!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"eyewire\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Eyewire<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The rim surrounding your frame\u2019s lenses.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"farsightedness\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Farsightedness<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you are farsighted, you have trouble seeing near objects, but you can see distant objects clearly. (We know, we know\u2014the name is confusing.) The medical term for this is&nbsp;<a href=\"#hyperopia\">hyperopia<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"fit\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Fit<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Do your frames fit? Here\u2019s how to tell.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pupils should be near the center of the lens<\/li>\n\n\n\n<li>Lenses shouldn\u2019t extend past the side of your face<\/li>\n\n\n\n<li>Eyebrows should not be inside the glasses<\/li>\n\n\n\n<li>When you smile, your cheeks shouldn&#8217;t push the frames up<\/li>\n\n\n\n<li>Frames shouldn\u2019t slide down your nose<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"flexible-spending-account\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Flexible Spending Account<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A flexible spending account (FSA to save breath) is a savings program that allows you to set aside pre-tax money for specific health care expenses\u2014prescription eyeglasses, prescription sunglasses, eye exams, and more included! Your FSA may expire at the end of the year, so best check those balances and get a little something come December.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"gift-cards\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Gift cards<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We like to help people see, so we figured you might like helping a loved one into some new eyewear. Our gift cards come in several denominations tailored to the prices of our frames, ranging from halfway to a new pair of single-vision eyeglasses all the way to a full pair of standard progressives. Take your&nbsp;<a href=\"https:\/\/www.warbyparker.com\/gift-card\" target=\"_blank\" rel=\"noreferrer noopener\">pick<\/a>!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"glasses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Glasses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This\u2026this is what we sell. Glasses.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"googly-eyes\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Googly eyes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Googly eyes are little plastic craft supplies that look like eyeballs. They have literally endless uses and are always funny. Googly eyes pair well with sock puppets.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"health-spending-account\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Health Spending Account<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sort of like&nbsp;<a href=\"#flexible-spending-account\">FSAs<\/a>, health spending accounts (or HSA for short) allow you to set aside pre-tax money to use on approved health care expenses like, say, prescription glasses or prescription sunglasses, contacts, or even the&nbsp;<a href=\"https:\/\/www.warbyparker.com\/accessories\/clean-my-lenses-kit\" target=\"_blank\" rel=\"noreferrer noopener\">Clean my Lenses Kit<\/a>. Added perk: these never expire!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"high-index-lenses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">High-index lenses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cHigh-index lens\u201d is a fancy phrase for a type of thin plastic lens that comes in handy for some higher prescriptions. Remember the kid from&nbsp;<a href=\"https:\/\/espngrantland.files.wordpress.com\/2015\/04\/sandlot_squints.jpg?w=694\" target=\"_blank\" rel=\"noreferrer noopener\"><em>The Sandlot<\/em><\/a>? High-index lenses make it possible to&nbsp;<em>not<\/em>&nbsp;wear glasses like that. (Although high-index lenses are not recommended for children 16 and under.)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"home-try-on\" \/>\n\n\n\n<h2 id=\"home-try-on\" class=\"wp-block-heading\">Home Try-On<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Our Home Try-On program lets you try out five frames at home for five days\u2014for free. When you find one you love, check out with your prescription and we\u2019ll send you a fresh pair. (It&#8217;s as easy as it sounds.) Get personalized recommendations from&nbsp;<a href=\"https:\/\/www.warbyparker.com\/quiz\" target=\"_blank\" rel=\"noreferrer noopener\">this quick quiz<\/a>, or learn more about the program&nbsp;<a href=\"https:\/\/www.warbyparker.com\/home-try-on\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"hydrophobic\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Hydrophobic<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cHydrophobic\u201d describes something that does&nbsp;<em>not<\/em>&nbsp;like water. We treat our lenses with superhydrophobic coatings, which repel moisture to help prevent smudging. Other things that are hydrophobic: cats.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"hyperopia\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Hyperopia<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">See&nbsp;<a href=\"#farsightedness\">farsightedness<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"how-to-read-a-contact-lens-prescription\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">How-to read a contact lens prescription<\/h2>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"ios-app\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">iOS app<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We have one of those. Download it&nbsp;<a href=\"https:\/\/itunes.apple.com\/app\/apple-store\/id1107693363?pt=1427163&amp;ct=AtoZ&amp;mt=8\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"insurance\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Insurance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A great way to help cover the cost of prescription glasses, prescription sunglasses, contacts, and. Learn more&nbsp;<a href=\"https:\/\/www.warbyparker.com\/insurance\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a>!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"in-store-prescription-check\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">In-Store Prescription Check<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you\u2019re eligible, our In-Store Prescription Check service allows an eye doctor to assess your vision and provide an updated glasses prescription. No appointment necessary!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"jazz-hands\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Jazz hands<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is what you\u2019ll do when you put on your first pair of Warby Parker sunglasses.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"keyhole-bridge\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Keyhole bridge<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A keyhole bridge looks like a very simplified keyhole. (You knew that was coming.) It\u2019s lightly curved; it has a vintage look; it\u2019s versatile. We likey.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"lacrimal-caruncle\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Lacrimal caruncle<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to being a good name for a band (that\u2019s a free idea, by the way), the lacrimal caruncle is the little pink spot at the inner corner of your eye. A fun thing to say to someone when they wake up in the morning is, \u201cYou have a crusty deposit in your lacrimal caruncle.&#8221;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"light-responsive-lenses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Light-responsive lenses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Light-responsive lenses begin to darken when exposed to UV rays (in both direct and indirect light)\u2014then fade back to clear indoors. The technology is built into the lenses, so the treatment won\u2019t rub or peel off. They\u2019re a particularly useful way to reduce the amount of frames you need to carry.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"low-bridge-fit\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Low Bridge Fit<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.warbyparker.com\/low-bridge-fit\" target=\"_blank\" rel=\"noreferrer noopener\">Low Bridge Fit<\/a>&nbsp;frames are crafted for those with low&nbsp;<a href=\"#nose-bridge\">nose bridges<\/a>&nbsp;(if the bridge of your nose sits level with or below your pupils), wide faces, and\/or high cheekbones. These are sometimes called \u201cAsian fit\u201d glasses.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What makes them fit well? Glad you asked\u2014a few things. First, we outfit ours with nose pads designed to sit on the sides of the nose, ensuring that your frames rest with zero tension and zero slippage. Second, we adjust the tilt of the lens to provide more space between your cheekbones and frames. Third, we subtly arch the temples (frame arms) for a roomier fit that banishes pinching. (Toodle-oo, pinching!)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"mixed-material\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Mixed Material<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Some mixed things are bad (like mixed messages). Some mixed things are good (like mixed nuts). Our Mixed Material frames definitely belong to the second category. These frames include densely-hued acetate and metal flourishes. Yum.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"monocle\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Monocle<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Thought to derive from the Latin monoculus (&#8220;one-eyed&#8221;), the monocle rose to popularity in the mid-19th century. Like a delicate ocular pet, the lens was attached to a wearer&#8217;s clothing by means of a silk string or a chain. Early frames were made of luxury materials, such as bone or horn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Like all costly technologies, the monocle quickly become a status symbol. The look was favored by bankers, lawyers, and gentleman horse breeders\u2014the kinds of men who sported orchids in their buttonholes and hats on their heads. Men with names like \u201cLlewelyn.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As monocles became the preferred accessory of 19th-century capitalists, they developed a sinister reputation. For its part, the medical establishment has always viewed monocles with skepticism. A Dr. Kitchiner denounced the monocle trend in 1824, calling it \u201cmischievous.\u201d To which we at Warby Parker can only reply\u2014<em>if being mischievous is so wrong, who among us would care to be right?<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"monovision\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Monovision<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Monovision is sometimes prescribed in contacts. It\u2019s a pretty neat refractive correction that works by making one lens for distance and the other for near vision.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"myopia\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Myopia<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">See&nbsp;<a href=\"#nearsightedness\">nearsightedness<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"nearsightedness\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Nearsightedness<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you are nearsighted, you have trouble seeing distant objects. Another word for it is \u201c<a href=\"#myopia\">myopia<\/a>.\u201d If you\u2019re sitting in the back row of a movie theater and the screen is blurry? Yep, that would be nearsightedness. It\u2019s pretty common.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"nose-bridge\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Nose bridge<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cNose bridge\u201d refers to the slope of the nose in between your eyes. (Put your finger there. It\u2019s a nice little area, isn\u2019t it? Definitely an underrated body part.) A low nose bridge is where the bridge of your nose sits level with or below your pupils. People with low nose bridges often have wide faces and\/or high cheekbones. (Tip:&nbsp;<a href=\"#low-bridge-fit\">Low Bridge Fit<\/a>&nbsp;frames minimize any pinching and prevent frames from sliding down your nose or resting on your cheeks. Which is fantastic, because no one on earth wants to be pinched by a pair of glasses.)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"nose-pads\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Nose pads<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Twin pads that rest on the sides of your nose and ensure a snug fit.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"OD\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">OD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This abbreviation appears on your prescription. It stands for \u201coculus dexter,\u201d which is \u201cright eye\u201d in Latin. Everything sounds cooler in Latin.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"optician\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Optician<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An optician is an eye care professional who is trained to interpret, fit, and dispense prescription eyewear. They don\u2019t provide you with the&nbsp;<a href=\"#prescription\">prescription<\/a>&nbsp;itself, but they make sure everything is up and running perfectly&nbsp;<em>after<\/em>&nbsp;you\u2019ve gotten a prescription from an eye doc.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"optometrist\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Optometrist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An optometrist is the doctor who gives you a prescription for glasses and\/or contacts. They can also diagnose eye diseases and prescribe some medications.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"ophthalmologist\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Ophthalmologist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to being an incredibly hard word to spell, an ophthalmologist is a medical doctor who specializes in the treatment and diagnosis of eye diseases, as well as in eye surgery. This person can also prescribe medications, glasses, and contacts.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"OS\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">OS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This abbreviation appears on your prescription. It stands for \u201coculus sinister,\u201d which is \u201cleft eye\u201d in Latin. (Cool.)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"phoropter\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Phoropter<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A phoropter is a big instrument that your doctor will use for refraction during an eye examination. It looks like a science-fiction mask. (VERY cool.)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"pince-nez\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Pince-nez<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is an old-fashioned style of glasses you may recognize from old paintings or photographs of&nbsp;<a href=\"https:\/\/en.wikipedia.org\/wiki\/Theodore_Roosevelt\" target=\"_blank\" rel=\"noreferrer noopener\">Theodore Roosevelt<\/a>. \u201cPince-nez\u201d means \u201cpinch-nose\u201d in French, which is appropriate because these frames stay put by pinching the nose. Sir Arthur Conan Doyle wrote a story called \u201c<a href=\"https:\/\/en.wikipedia.org\/wiki\/The_Adventure_of_the_Golden_Pince-Nez\" target=\"_blank\" rel=\"noreferrer noopener\">The Adventure of the Golden Pince-Nez<\/a>,\u201d which we might consider the cultural apex of this style.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"plano\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Plano<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cPlano\u201d refers to a lens without a prescription. Just a plain ole\u2019 plano.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"polarized-lenses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Polarized lenses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Polarized lenses eliminate glare, making it easier for you to see without straining your eyes. How do they work? Physics, punk! Light waves vibrate in different directions, and most of the light waves that cause \u201cglare\u201d\u2014those shiny reflections off a pool or a highway\u2014are horizontal. Polarized sunglasses have teensy vertical filters that prevent horizontal light waves from entering.&nbsp;<em>Voil\u00e0<\/em>: no glare. It\u2019s so simple, yet so cool.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"polycarbonate\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Polycarbonate<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Polycarbonate is an \u00fcber tough transparent plastic with exceptional impact resistance. (It won\u2019t break if you drop it, unlike eggs, crystal vases, fine china, water balloons, etc.). All standard Warby Parker optical lenses are fashioned from polycarbonate.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"prescription\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Prescription<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A prescription is a formula for making the best pair of eyeglasses for you. Think of it like a recipe with different ingredients: You\u2019ve got your&nbsp;<a href=\"#sphere\">sphere<\/a>&nbsp;(to indicate the strength of the lens you need), your&nbsp;<a href=\"#cylinder\">cylinder<\/a>&nbsp;(which indicates the lens power needed to correct astigmatism), and your&nbsp;<a href=\"#axis\">axis<\/a>&nbsp;(which indicates where to place the lens correction for astigmatism), among other pieces of information.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"prism\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Prism<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is a piece of information that may appear on your&nbsp;<a href=\"#prescription\">prescription<\/a>. If your doctor includes a prism correction on your prescription, you\u2019ll see a little triangle symbol next to it, like this: \u2206<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"progressives\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Progressives<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Progressive lenses are like a fun \u201ctwo-for-one\u201d deal, offering multiple focal corrections all in the same lens (distance correction on top, intermediate in the middle, and reading correction on bottom). This means you can see your whole field of vision without switching between multiple pairs of glasses. Party on.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"progressive-lenses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Progressive lenses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">See&nbsp;<a href=\"#progressives\">progressives<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"pupil\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Pupil<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cPupil\u201d is a fun word to say. It\u2019s the part of your eye that light passes through\u2014the little hole right smack in the middle. Humans have circular pupils, but a lot of animals have crazy-shaped pupils, like geckos. We\u2019re not even sure how to describe the shape of a gecko pupil. It\u2019s almost like a piece of beef jerky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Anyhow, back to science. Your pupils expand and contract depending on the light conditions surrounding you. When light is scarce, your pupil expands; when the sun is blazing, your pupil contracts to limit the amount of light that enters. Like a camera aperture.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"pupillary-distance\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Pupillary distance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Your pupillary distance is&#8230;drumroll&#8230;the distance between your&nbsp;<a href=\"#pupil\">pupils<\/a>! It\u2019s a handy measurement that helps align your lenses to fit the frames you choose. Your pupillary distance can be measured in a number of ways\u2014there\u2019s even a device called a \u201cpupillometer.\u201d (Great word.)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In an ideal world, your eye doctor will include it on your prescription every time. But not all doctors do this. If your doctor forgets, you can always use our&nbsp;<a href=\"https:\/\/www.warbyparker.com\/pd\/instructions\" target=\"_blank\" rel=\"noreferrer noopener\">handy online tool<\/a>&nbsp;to get your measurement.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"pupils-project\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Pupils Project<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Our program that provides free vision screenings, eye exams, and glasses to schoolchildren in need. In 2015, we got together with a number of organizations and local government agencies, like the Department of Education in New York City and the Department of Health in Baltimore, to bring vision care directly to children in their classrooms, where vision issues often first come to light.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"quinoa\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Quinoa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Quinoa is a delicious and healthy food. We didn\u2019t have any eye-related words that start with the letter \u201cQ\u201d so we\u2019re going with quinoa, because otherwise the \u201cQ\u201d section will be lonely. Bon app\u00e9tit.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"readers\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Readers<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Readers (or reading glasses) are glasses with non-prescription lenses that make it easier to read (or do anything that requires really good eyesight at close range). They\u2019re available in various preset magnification strengths, which users can choose from to match their needs.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"refraction\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Refraction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In science terms, refraction is the bending of any wave (but for our purposes, a light wave) as it passes from one medium into another. In eyewear terms, refraction refers to the process of determining your refractive error.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"retina\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Retina<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The retina is a light-sensing layer of tissue lining the inside of your eye. Think of it this way: If the eye is a camera, the retina is your photographic film.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"segment-height\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Segment height<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Segment height is one of the measurements used to create super-accurate progressive lenses. It&#8217;s a vertical measurement (in millimeters) that tells the lab where to start your progression. Sometimes we refer to it as \u201cseg height,\u201d just to be cool. \ud83d\ude0e<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"single-vision-lenses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Single-vision lenses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Single vision lenses correct for one field of vision (usually for distance or reading).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"snellen-chart\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Snellen chart<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is your classic eye chart. You know, the one with the letters that go from big on top to maddeningly tiny on the bottom. It was invented in 1862 by a professor of ophthalmology in the Netherlands named Dr. Herman Snellen. Apparently it is the best-selling poster in America, which is either incredibly nerdy or ridiculously nerdy.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"sphere\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Sphere<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is one piece of information that appears on your&nbsp;<a href=\"#prescription\">prescription<\/a>. It indicates how strong your lens needs to be.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"sphygmomanometer\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Sphygmomanometer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">First of all, how many syllables does one word NEED? Save some syllables for the rest of us, sphygmomanometer!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A sphygmomanometer is an instrument used to test your blood pressure. It\u2019s that inflatable rubber cuff that squeezes your upper arm in a somewhat uncomfortable fashion. (You know what we\u2019re talking about.) Because eye doctors can sometimes detect signs of high blood pressure in your eyes, they may use a sphygmomanometer to get your blood pressure during an eye exam.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"standard-fit\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u201cStandard fit\u201d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cStandard fit\u201d frames are our alternative to&nbsp;<a href=\"#low-bridge-fit\">Low Bridge Fit<\/a>&nbsp;frames. Low Bridge Fit frames are crafted for those with low nose bridges (if the bridge of your nose sits level with or below your pupils), wide faces, and\/or high cheekbones. If you don\u2019t have these features, you\u2019ll want to stick with \u201cstandard fit.\u201d<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"stores\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Stores<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A magical place where you can experience Warby Parker IRL. You\u2019ll find artwork from artists we love, books from independent publishers, and lots and lots of glasses. They usually are designed to feel like a library because books and glasses just go together. (Use the hashtag #AtWarby if you come&nbsp;<a href=\"https:\/\/www.warbyparker.com\/retail\" target=\"_blank\" rel=\"noreferrer noopener\">visit us<\/a>!)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"temple\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Temple<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Also known as the&nbsp;<a href=\"#arm\">arm<\/a>, this is the part of your glasses that runs alongside your head and holds them in place.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"titanium\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Titanium<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Titanium is a strong, durable substance that holds up well under force. (Just like you.) We use it to make glasses because it has a high strength-to-weight ratio, which makes it ideal for an item that rests on your nose. Also: Titanium never rusts.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Its symbol is Ti, like the&nbsp;<a href=\"https:\/\/www.youtube.com\/watch?v=nQJACVmankY\" target=\"_blank\" rel=\"noreferrer noopener\">rapper<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Titanium was discovered in 1791. Other fun things that occurred in 1791: Vermont became a state, the guy who invented Morse code was born, and the world\u2019s first Sunday newspaper was published. Yeah, it was a good year.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"toric\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Toric<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Geometry geniuses may remember that toric means having two independent curves instead of one.&nbsp;<em>What\u2019s this have to do with my eyes?<\/em>&nbsp;you might ask. Well, toric contact lenses are used for people with astigmatism, so the prescription will have both a Cylinder (CYL) and an Axis value.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"tortoise-shell\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Tortoise shell<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In the 19th century, tortoise shell was a prized material for all sorts of household objects, from combs to cigar boxes to spoons to paper cutters. Fancy people stored champagne in tortoise shell ice buckets. It made sense: Tortoise shell is a beautiful material, with complex marbled hues and a rich glow. Even the ancient Egyptians used it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The problem is that tortoise shell originally came from an actual animal; specifically, the hawksbill sea turtle. This big guy grows to three feet long, has a cute little beak, and enjoys swimming among coral reefs and lagoons. In 1973 the Endangered Species Act was passed, which officially protected hawksbill sea turtles from being hunted. They\u2019re still endangered though.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s where it is important to note that our tortoise shell is NOT made from actual tortoises. We would never do that. Instead, ours is made of custom cellulose acetate. Our designers have a lot of fun concocting tortoise hues of every shade\u2014with no cruelty involved.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"ultraviolet-light\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Ultraviolet light<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ultraviolet light is a form of electromagnetic radiation that surrounds us, but it\u2019s not visible with the human eye. Our main source of UV light is the sun. (If you\u2019re overexposed to UV light, you can get a sunburn. Be safe out there, guys.)<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"unitedhealthcare\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">UnitedHealthCare<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">UnitedHealthCare is one of the&nbsp;<a href=\"https:\/\/www.warbyparker.com\/insurance\" target=\"_blank\" rel=\"noreferrer noopener\">insurance<\/a>&nbsp;providers we work with. Many folks with this insurance can purchase our eyeglasses or sunglasses, with prescription lenses included, for $25 or less!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"visual-acuity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Visual acuity<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Visual acuity is a schmancy way of saying \u201chow well you can see.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You may have heard the term \u201c20\/20 vision\u201d tossed around. That term describes \u201cnormal\u201d vision. If you have 20\/20 vision, you can see at 20 feet what a person with normal vision would see at 20 feet. It\u2019s possible to have better than average vision\u2014some people, for example, have 20\/15 vision, which means they can see at 20 feet what most people can only see at 15 feet! (#jealous).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"visual-field\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Visual field<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Your visual field (or \u201cfield of vision\u201d\u2014same thing) is the area that you are able to see when your eyes are in one fixed position.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"virtual-try-on\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Virtual Try-On<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Virtual Try-On is a super futuristic tool within the Warby Parker app that lets you instantly see how you look in a pair of eyeglasses or sunglasses\u2014down to the real color, texture, and size of each style\u2014using just your phone. It\u2019s available on iPhone X and above.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"virtual-vision-test-app\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Virtual Vision Test app<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An app we made (and are very proud of). Our&nbsp;<a href=\"https:\/\/www.warbyparker.com\/virtual-vision-test\" target=\"_blank\" rel=\"noreferrer noopener\">Virtual Vision Test<\/a>&nbsp;is a telehealth service that, if you are eligible, allows an eye doctor to assess how you&#8217;re seeing through your current glasses or contacts and provide a renewed prescription. All with just an iPhone 6s or above!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"windshield-wipers\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Windshield wipers<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We wish we had these for our glasses :\/<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"x-ray-glasses\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">X-ray glasses<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These are not a thing.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"yes\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Yes!<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is what you will shout\u2014possibly accompanied by a fist pump\u2014when you put on your first pair of Warby Parker glasses. Good times.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" id=\"zzzz\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">Zzzzz<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is what happens when you close your eyes in bed at night.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Accessories To keep your glasses in tip-top shape, we\u2019ve got accessories for any scenario\u2014the traveling glasses, the smudgy glasses, the&nbsp;I\u2019ve-got-lots-of-glasses-I-forgot-about-this-pair-of&nbsp;glasses, and more. Keep \u2018em clean, keep \u2018em safe! Acetate Acetate\u2014or, more specifically, cellulose acetate\u2014is the caviar of plastics. It\u2019s durable, hypoallergenic, and capable of holding exceptionally rich colors, which makes it an ideal material for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":163,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-146","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eyewear"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A glossary dedicated to all things eyewear and eye care | Warby Parker<\/title>\n<meta name=\"description\" content=\"Our easy-breezy super-smarty guide to everything from progressives to eyewires to monocles.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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