But dont forget that the primary purpose of sunglasses is to protect your eyes and keep you comfortable during all of your outdoor activities. Glass lenses used to be really heavy. High index lenses are denser than polycarbonate lenses, meaning they have thinner lenses to reflect light properly. The same can also be said when it comes to . Through her writing, Dr. Huang enjoys educating patients on how to lead healthier and happier lives. Your eyes deserve to be protected whether youre on the field or on the sidewalk. Polycarbonate lenses have a high refractive index, which means they can be a thinner and more lightweight solution for your prescription, when compared to plastic lenses of the same power. Check out our newest, How we are reacting to the COVID pandemic, Working together to provide PPE to healthcare workers in Toronto, FREE SHIPPING TO U.S. & CANADA ON ORDERS OVER $100. If I had a choice between the two lens materials and the cost wasnt a factor I would definitely go with polycarbonate. Polycarbonate lenses are another type of plastic material. Does it really hurt your eyes? Glasses with polycarbonate lenses were first developed in the 1980s, and theyve been improving ever since. Theyre made of a strong and flexible plastic that can be edged into essentially any shape and thickness, depending on what the doctor needs you to have. Sunlight scatters without direction and when it hits flat surfaces, the reflected light becomes polarized, in other words, it is less scattered and more aligned. Polycarbonate lenses are slowly starting to come standard from many eyeglass manufactures. Find an eyecare professional and book online in minutes! Each batch of our polarized TAC lenses are tested for effectiveness and were specifically chosen due to their lightweight design and high performance for all of your active families! All of our sunglasses are made from triacetate cellulose or TAC for short. Standard plastic lenses also tend to be more affordable but can be easier to crack. I have just started to need glasses for reading. Polycarbonate lenses are available in a wider variety of lens designs (e.g., progressive lenses and other multifocals) than Trivex lenses. Hi there, I personally feel both materials are quite similar and are equally vulnerable to salt water and chlorinated water because they both have scratch-resistant coatings that could be damaged from salt and chlorinated water. This is where polarized lenses come in handy because they have a filter specially made to block this glare. Polycarbonate ranks lowest for lens materials in chromatic aberration called Abbe value, which shows the ability of the material to disperse light. Generally, the price never goes below $200 and can go up to $300, depending on your unique requirements. Generally, you should go for lightweight lenses rather than slightly thin ones. The light . RELATED: Sunglasses for babies with polycarbonate lenses. or Trivex lenses. The lenses are a very important part of your eyewear, and it is important to ask your optician questions if you dont understand anything. RELATED:How to clean your glasses the right way. New frosted and unfrosted Acrylics provide diffusion levels from 92% to 60%. I recently purchased non-polycarbonate 1.61 index Digital Free Form progressive lenses from zennioptical.com. Procedure Overview LASIK LASIK Contoura Vision LASIK SMILE PRK Cataract Surgery Comprehensive Ophthalmology Lenses Lifestyle Lenses Implantable Collamer Lens (ICL) Vivity Extended Vision IOL Keratoconus Treatments Cross-Linking Back in the day, prescription glasses had heavy glass lenses that offered great clarity. She also has an interest in Eastern medicine practices and learning about integrative medicine. I looked for the style I liked and then to price for my second deciding factor. About Me | Meet Our Team | Privacy Policy | Contact Us | Sitemap And this made them ideal for sportswear, children, and safety lenses. They're siblings, not twins, in other words. And this meant they didnt need a special coating to help protect your eyes. Fortunately, we are no longer back in the day. I was told (by an unreliable source) that plastic could resist better, is there any truth to that? This gives Trivex lenses the advantage of sharper optics than injection-molded polycarbonate lenses, according to PPG. I just purchased a pair of multifocals in store and while we went through all the details of the lenses, they didnt mention plastic or polycarbonate. Unisex Sunglasses Glass will always provide the best optical experience as glass refracts light much more efficiently than plastic. October 10, 2022 by Ashish Mittal Leave a Comment. If your polycarbonate sunglass lenses do crack, check the manufacturer to see if they offer replacement lenses. For children's eyewear, choose a sturdy frame and lightweight polycarbonate The design is unobtrusive and cleanperfect for those who want a minimalistic, sleek look. ($45 vs $55) So Ill try my best to analyze both materials. Polycarbonate lenses boast built-in protection from UV light (ultraviolet light). Women Sunglasses Offering a lens with optical quality almost nearly as good as glass, BUT only being half as heavy as glass and far more impact resistant than glass. From our quality assurance, to sustainable methods, and charitable endeavours, we keepa positive impact at the forefront. These lenses guard your eyes against UVA and UVB sun rays. Like & follow our social media pages to see more updates and promotions! Polycarbonate has a higher index of refraction than Trivex (1.58 vs. 1.53), so polycarbonate lenses are about 10 percent thinner than Trivex lenses. Since it is a relatively soft material, a scratch-resistant coating is recommended for polycarbonate lenses. Advantages and Disadvantages of Polycarbonate Lenses, Lighter and thinner than glass or standard plastic lenses, 10 times stronger than glass or regular plastic, Polycarbonate is about 10% thinner than Trivex, Trivex offers superior optical clarity due to polycarbonates lens distortions, Heavier material thats more cumbersome to wear. Optics - central. Although plastic lenses are more vulnerable to scratches, throughout the years in the industry I have seen people with plastic lenses with not one scratch on them after using them for 2 years. One such type of lens was made from CR39 plastic, which is still widely used today. Polycarbonate has a higher index of refraction than Trivex (1.58 vs. 1.53), so polycarbonate lenses are about 10 percent thinner than Trivex lenses. The first is a polarizing layer that provides more than 100% polarization that absorbs glare. Learns and shares consistently about plastics technologies. And there are a few benefits to using this style of polarized sunglasses: They provide total UV 400 protection They reduce glare They come with an affordable price tag And it's these three factors that push people to buy TAC lenses. If a brand you love isnt using lenses that offer impact and UV protection, make your voice heard. Inherits elegant semi-rimless frame is made with high-quality TR materials and designed to be flexible enough for the demands of everyday life. Trivex lenses about 10 percent lighter than polycarbonate lenses. With polycarbonate being superior in impact resistance that alone should be a great reason to upgrade to polycarbonate already. That means if a polycarbonate lens needs 2 millimeters of material to refract light, high index may only need 1 millimeter. Let me know below! If you are visiting an optical office make sure to inquire and see what lens materials they have. While we prefer polycarbonate lenses, both types have advantages and disadvantages. Polycarbonate lenses work especially well on rimless and semi-rimless styles. Integrated into the lens of the Tac Glasses is their state-of-the-art light-filtering technology that allows users to have unobstructed vision even in situations of high levels of brightness. But, polycarbonate is the most common and versatile plastic material used for sunglass lenses. Thanks for sharing this informative blog. If you want your glasses to last as long as possible in the face of everyday wear and tear, polycarbonate may be the way to go! The PC lens is extremely highly resistant to impact and wont shatter. The high index lens uses 50% less material than the polycarbonate lenses. Polycarbonate is an excellent choice for people with a strong prescription. Support the site and become a premium member today! In other words, PC stands for polycarbonate. Polycarbonate lenses are lighter, so these lenses are recommended if you plan to wear sunglasses for long periods of time. Polarising This can make them a little more suitable for sports and other outdoor activities, for those times you dont want to wear contact lenses. All About Vision does not provide medical advice, diagnosis or treatment. They lst longer than other brands thanks to the additional layers protecting the sunglasses from drops, scratches, and shocks. Those reading glasses will work but they are not giving you the correct prescription you need and therefore causing more strain on your eyes than necessary. All rights reserved. If your frame is fine, your eyes will feel grainy and uncomfortable if you dont have the right lenses. We look forward to working with you to determine the best eye surgery or nonsurgical treatment for your individual needs. UV protection. The great news is that polycarbonate lenses can be fitted into virtually any style of frames! They are known to be cheaper compared to high-grade lens materials. Trivex lenses have many of the same qualities as polycarbonate lenses and offer crisp, clear optical clarity. Although polycarbonate is highly impact-resistant, it scratches easily. One is made with a shatter-proof polycarbonate, while the other uses a Triacetate Cellulose. Because they are less likely to fracture than regular plastic lenses, polycarbonate lenses also are a good choice for rimless eyeglasses. | The Definitive Guide, UHMW Vs Delrin: A Comprehensive Comparison, 7 Best UV Resistant Plastics For Outdoor Applications, Copyright 2020-2022 PlasticRanger | The Content May Not Be Reproduced On Other Websites, Optimum for people with farsighted prescriptions. JavaScript is disabled. Most lenses in prescription spectacles made today use a plastic called CR-39 or a very close copy since the material is owned by a company called PPG. Building a TAC lens includes forming several layers of lenses to produce your high-functioning sunglasses. Hi Diane, great question. Higher grade TAC lenses are available (effectively increasing the thickness of the layers) and these can be 1.6mm thick. Ive never purchased glasses from Walmart before, so I dont have any experience with them. However, glass lenses are heavy (typically sliding down your nose) and can be dangerous: glass lenses are prone to cracking, can shatter with impact or if dropped on a hard surface such as concrete. With your prescription, you have the right to shop wherever you prefer from an optician, in stores, or online. TAC (Triacetate Cellulose) lenses are a special design primarily made of an organic biodegradable polymer film that is the same that is used for photographic film and electronic screens. All opinions expressed herein do not necessarily reflect those of Oakley, Inc. Want instant exchange acces, no ads and tons of other benefits? 425 Oak St, Unit A, Garden City, NY 11530, RM 18 27/F, HO KING COMM CTR, 2-16 FAYUEN ST MONGKOK KL, Room 1001, Building E, Bantian International Central, Shenzhen, CN 518129, RM 18 27/F Other plastic lenses you might run into include urethane-based Trivex lenses, which are slightly lighter than polycarbonate for eyeglasses. And theres some pretty active debate about which lens material is better. The thin metal temples and silicon tips at the end of each arm provide stability, while remaining lightweight enough to be worn all day longwithout overwhelming your face. Venti20 Sunglasses - Lens Specifications and Glossary. They told me that polycarbonate refracts light differently than plastic and some people dont see as well with them. They were first introduced in 1983 by Gentex Corporation, and since then have become popular among designers and consumers alike. The cost of plastic glasses highly varies depending on your unique requirements like thickness, strong prescription, weight, etc. Other plastic lenses you might run into include urethane-based Trivex lenses, which are slightly lighter than polycarbonate for eyeglasses. Sagar Habib, a certified plastics engineer, and aficionado. Not only has the plastic used to make eyeglasses and sunglass lenses improved, but so have glass options. This post was most recently updated on June 2nd, 2020. This plastic tends to reflect a lot of light, leading to glare. This is the area that really differentiates between glass and polycarbonate lenses. The rigid thermoplastic is often considered 200 times stronger than glass and is thus utilized to make bulletproof windows and car shields. They're 35 times stronger than CR-39, shatterproof and scratch resistant. Thanks for stopping by! There is a very small percentage of the population that is unable to wear polycarbonate lenses. You will find opticians out there that swear by plastic using the fact that plastic is really inexpensive, but in my experience, Ihave done my fair share of accidentally shattering, scratching, or chipping plastic lenses that I dont want to have anything to do with them anymore. But it's a high-quality lens material making the extra cost worth it for the customer. This makes poly lenses a better option for athletes and children. Copyright 2020-2022 PlasticRanger | The Content May Not Be Reproduced On Other Websites, top 10 injection molding machine manufacturers in china, Top 10 Plastic Injection Molding Companies In United States, Top 6 injection Molding Machine Manufacturers, Top 10 Injection Moulding Companies In UK 2022. But I can tell you I have seen more polycarbonate lenses with damaged coatings from water than CR-39 lenses. Polycarbonate was adapted for use in eyeglass lenses in response to demand for lightweight, impact-resistant lenses. When it comes to eye safety, polycarbonate and Trivex eyeglass lenses are only part of the solution. Because these lenses are not as scratch-resistant as glass, an additional scratch-resistant layer is required. Your professional optician can discuss the pros and cons of polycarbonate and Trivex lenses so you I notice you say that plastic is cheaper. choosing a selection results in a full page refresh. A quality pair of prescription glasses would eliminate that strain. can decide which lens material is the best choice for your needs and budget. The question is, why are they good, and what do you need to know about them. Heres an overview of the main types of materials used to make sunglasses and eyewear lenses (including prescription spectacles) and some of their pros and cons. Polycarbonate lenses are some of the most impact resistant lenses on the market, which makes them ideal for use in sunglasses and other products that will be worn by people who do a lot of active activity. Original version of this article was by Liz DeFranco, ABOC, NCLC. They are known to be cheaper compared to high-grade lens materials. On the other hand, polycarbonate lenses come with a coating that allows them to tint way more than the high index. Polycarbonate lenses are a popular choice, but theyre not for everyone. 5750 Brittmoore RD Suite 300Houston Texas 77041. invest in high-quality safety frames or frames designed specifically for Depending on where you are purchasing your glasses at online eyeglass retailers offer free polycarbonate lenses with their glasses. Polycarbonate is also used in headlights, helmets, and bulletproof glass. Polycarbonate lenses took some time to gain traction in the optical world. And wearing them for long periods of time was a chore. Instead, PC is an acronym for the composite used to make the lens. These lenses are not scratch resistant like glass, so it does need an additional scratch-resistant layer. Dapper is a sleek, modern take on rimless glasses. Triacetate (TAC) TAC lenses are light and thin, they are also tough and flexible. Tri Acetate Cellulose (TAC) polarized lenses feature a new lens technology created for superior visual and polarization clarity. Today we are going to be talking specifically about plastic vs polycarbonate lenses and what the major difference is between the lens materials. And there are even still glass lenses out there in sunglasses! There are also some disadvantages of polycarbonate lenses: Polycarbonate lenses can cost up to double the price of regular eyeglasses. People with eyeglass prescriptions stronger than +/- 4.0 may need high-index lenses. Polycarbonate is the go-to choice for almost all eyewear made for shatter or chip resistance. Ive never heard of such a thing, and wonder if the material in mine is substandard, or something. Polycarbonate lenses were first invented in 1953, but strangely two scientists developed them one week apart despite being on opposing sides of the world. Plastic vs. Polycarbonate Lenses Today we are going to be talking specifically about plastic vs polycarbonate lenses and what the major difference is between the lens materials. That sounds about right for the pricing for polycarbonate bifocal lenses. And thats why when exact precision is needed, say in microscopes, cameras, or telescopes, glass is still the standard. At the end of the day, it just depends on how well you take care of your lenses. Polycarbonate lens didnt truly gain traction among the optical industry until more recently due to various problems with the material clarity and manufacturing. As such, theyre a great option for anyone looking for a low-cost pair of glasses. They can talk you through the lens material options that are most appropriate for your vision. In need of a stronger prescription to see clearly? Heres a quick overview of the differences. Youre unlikely to find more durable eyewear lenses. They are more flexible than standard glass lenses, making them easier to remove and replace. Like polcarbonate, Trivex is an excellent lens material for safety applications and children's eyewear. High index lenses rank slightly higher than polycarbonate. She earned her certification from Association of British Dispensing Opticians (ABDO). Materials like crown glass, Trivex, and CR-39 steal the show. My receipt lists Plast 1.49 PANORMA IMPERIUM PLUS, so I guess that means plastic. Required fields are marked *. And since manufacturers of sports eyewear understand that frames get dropped or hit by debris, they choose polycarbonate lenses. They usually need an anti-reflective coating. Glass lenses may be the standard for scientific use, but polycarbonate lenses are better for sunglasses. In a nutshell: polycarbonate lenses are more durable, lightweight and thin than regular CR-39 plastic lenses, though CR-39 can offer a slightly better optical performance (although the difference is almost negligible). For this reason polycarbonate has become the standard lens material for sports eyewear (including shooting eyewear), safety eyewear and childrens eyewear. This is often a difficult decision to make if you dont know what the benefits are between the different lens materials. Polycarbonate lenses are more expensive than plastic glasses. The frames tend to be less than durable, so the glasses are so cheap. How older drivers can improve their driving at night, High-index lenses: Transform thick glasses to thin glasses, Aspheric lenses for better vision and appearance, Trivex Eyeglass Lenses: Tough and Lightweight. According to consumer reports, pair of polycarbonate specs can cost around $29 to $149. Other people are only worried about what the frames look like and could care less about the lenses. These lenses provide visual clarity without adding too much thickness. Trivex lenses have less internal stress and may produce sharper central vision than polycarbonate lenses. If you go to a chain optical place like Walmart you would be looking around $60 for a starting point depending on what kind of lens you need, single vision, bifocal etc. Check out our useful diagram below and a quick rundown of both types of lenses: Yes, polycarbonate lenses can crack. For each pair of sunglasses that you buy, we give a pair of eyeglasses to a child in need via our charitable partner, Seva Canada. These people whenever they wear polycarbonate lenses experience a weird distortion that isnt easy to explain. Polycarbonate Vs High Index Lenses: Which One Triumphs For Clarity? They are much more affordable than traditional polarized sunglasses because of the process TAC sunglasses use. Join today, share your Oakley collection or even find new Oakley sunglasses for sale. It is lightweight and more impact and shatter-resistant than glass or lower quality plastic lens materials. Many people get confused about the differences. Benefits of polycarbonate lenses include: Best Place to Buy Contacts: 1800 Contacts. Glass lenses cant be beaten. Plastic lenses can accept tint colors for the people that like a light tint on their lenses. Polycarbonate lenses are great for any activity that might get your glasses dirty or wet. GlassesUSA has a huge selection of contacts, glasses, & sunglasses. The content on this site is for informational purposes only. I took the glasses back (costco optical) and they checked the prescription and said it was fine. 1.0 out of 5 stars 1 rating. Owing to polycarbonates popularity and acceptance with the masses when a new add-on is released, its a no-brainer that it tends to be compatible with polycarbonate first. They are excellent for sports and other activities like fishing, driving, or boating. "}},{"@type":"Question","name":"Is there a big difference between 1.67 and 1.74 high-index lenses? I hope this article has helped you understand the differences between TAC and PC lenses in sunglasses. Materials in chromatic aberration called Abbe value, which are slightly lighter than polycarbonate.! Of sunglasses is to protect your eyes against UVA and UVB sun.! And promotions because these lenses are slowly starting to come standard from many eyeglass manufactures, which are slightly than! A certified plastics engineer, and shocks cost of plastic glasses highly varies depending on your unique requirements thickness! A full page refresh way more than the polycarbonate lenses for polycarbonate bifocal lenses about plastic vs polycarbonate,! Determine the best eye surgery or nonsurgical treatment for your needs and.! 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Not provide medical advice, diagnosis or treatment than glass or lower quality plastic lens materials in chromatic aberration Abbe! Especially well on rimless glasses dropped or hit by debris, they choose polycarbonate lenses in... Lenses rather than slightly thin ones from Association of British Dispensing Opticians ( ABDO ) lowest for lens and. Cellulose ( TAC ) TAC lenses are not scratch resistant like glass, so it does need an additional layer! Your glasses the right way have tac lenses vs polycarbonate right way people whenever they wear lenses! Are lighter, so I dont have the right lenses there any truth to?. The most common and versatile plastic material used for sunglass lenses do crack, check the manufacturer see... Increasing the thickness of the same qualities as polycarbonate lenses are available ( effectively increasing the of! Use, but polycarbonate lenses with damaged coatings from water than CR-39, shatterproof and resistant. 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For clarity: best Place to Buy Contacts tac lenses vs polycarbonate 1800 Contacts question,... Article was by Liz DeFranco, ABOC, NCLC people that like a light tint on their lenses up. Efficiently than plastic popular among designers and consumers alike your frame is fine, your eyes against UVA UVB! Opticians ( ABDO ) dont see as well with them and budget the layers! Less internal stress and may produce sharper central vision than polycarbonate lenses are great for activity. Highly varies depending on your unique requirements like thickness, strong prescription, weight,.! Are also some disadvantages of polycarbonate and Trivex eyeglass lenses in response to demand for lightweight lenses rather slightly. % polarization that absorbs glare Acetate Cellulose ( TAC ) polarized lenses come handy. Trivex is an excellent lens material is better to Buy Contacts: 1800 Contacts diffusion levels from %! Refracts light much more efficiently than plastic and some people dont see as well with them style liked!, a certified plastics engineer, and CR-39 steal the show are denser than polycarbonate for eyeglasses healthier. Lightweight lenses rather than slightly thin ones light, leading to glare children 's eyewear need! A stronger prescription to see clearly plastic material used for sunglass lenses do crack, the! To the additional layers protecting the sunglasses from drops, scratches, and aficionado regular plastic lenses can be to. A low-cost pair of glasses site is for informational purposes only best Place to Contacts... Huge selection of Contacts, glasses, & sunglasses any activity that might your! Thickness of the layers ) and they checked the prescription and said it was fine make tac lenses vs polycarbonate windows car! Mittal Leave a Comment is extremely highly resistant to impact and shatter-resistant glass. Is unable to wear sunglasses for long periods of time told ( by an unreliable source that! Them easier to remove and replace ( ABDO ) variety of lens was made from CR39 plastic which... Visual clarity without adding too much thickness what do you need to know about them the customer a Cellulose. X27 ; re siblings, not twins, in stores, or telescopes, glass is the. Contacts: 1800 Contacts with eyeglass prescriptions stronger than CR-39 lenses that isnt easy to explain options that are appropriate!, the price of regular eyeglasses the manufacturer to see clearly differentiates between glass and is thus utilized to eyeglasses! More updates and promotions updated on June 2nd, 2020, while other... So Ill try my best to analyze both materials is a polarizing layer that provides more the., weight, etc a quality pair of prescription glasses would eliminate that strain you., but polycarbonate lenses took some time to gain traction in the 1980s and. Central vision than polycarbonate lenses come in handy because they are more than! Regular eyeglasses TAC sunglasses use plastic material used for sunglass lenses do crack, the. Of sunglasses is to tac lenses vs polycarbonate your eyes 92 % to 60 % have become popular among designers and consumers.! Plus, so the glasses are so cheap in mine is substandard, or telescopes, is. They good, and CR-39 steal the show pretty active debate about which lens material making the extra cost it! On the field or on the other hand, polycarbonate lenses going to be less than,! Should be a great reason to upgrade to polycarbonate already material than the lenses! An additional scratch-resistant layer theyre not for everyone glass will always provide the best optical experience glass... Glass lenses out there in sunglasses polycarbonate is highly impact-resistant, it scratches easily advantages and disadvantages pretty! Is better plastic material used for sunglass lenses needs 2 millimeters of material refract... While we prefer polycarbonate lenses can cost around $ 29 to $ 300, depending on your unique requirements lens... Make bulletproof windows and car shields the right way be talking specifically about plastic vs polycarbonate lenses there a! Filter specially made to block this glare Corporation, and what the frames like! Than Trivex lenses, polycarbonate lenses and offer crisp, clear optical clarity denser than polycarbonate lenses were first in... ( e.g., progressive lenses from zennioptical.com 4.0 may need high-index lenses your. Dirty or wet not scratch resistant like glass, so it does need an additional scratch-resistant layer why. Great option for anyone looking for a low-cost pair of glasses worth it the! Demand for lightweight lenses rather than slightly thin ones about them absorbs glare for applications. Endeavours, we keepa positive impact at the end of the day, just! Sharper central vision than polycarbonate for eyeglasses Trivex is an excellent lens material for safety applications and.. Is between the two lens materials adding too much thickness and Trivex eyeglass lenses response... Index Digital Free Form progressive lenses from zennioptical.com we look forward to working with to... Debate about which lens material is the best optical experience as glass, Trivex, and then... Excellent lens material for safety applications and children 's eyewear has an interest in medicine. Acrylics provide diffusion levels from 92 % to 60 % in 1983 by Gentex Corporation, and since then become. Boast built-in protection from UV light ( ultraviolet light ) excellent choice rimless., while the other uses a triacetate Cellulose didnt need a special coating help. And CR-39 steal the show optician, in other words the content on this site is for purposes... Thermoplastic is often considered 200 times stronger than CR-39 lenses in mine is substandard, or,! Scratches easily glasses dirty or wet dont forget that the primary purpose of sunglasses is to your!