Obviously, I am clearly talking about CR-39 vs polycarbonate. Okay, so you know a little bit about the sunglasses and the advantages and disadvantages, but what are the differences between the two? An optical plastic lens was invented in the early 20th Century, though these had low light transmission rates and refraction indices. RELATED:How to clean your glasses the right way. Just to add that polycarbonate is plastic. Although polycarbonate is highly impact-resistant, it scratches easily. Those original opticians had it right when it came to optical clarity. The lenses are a very important part of your eyewear, and it is important to ask your optician questions if you dont understand anything. Thank you for reaching out. And wearing them for long periods of time was a chore. Whenever you go purchase glasses you are always given a variety of different choices when it comes to lens materials. Created this site because of the lack of a place for the Oakley Community to talk. Polycarbonate and Trivex lenses offer up to 10 times more impact resistance than regular plastic lenses. Even then with the scratch-resistant coating plastic lenses are still one of the easiest lenses to be scratched. This includes single-vision lenses to correct common forms of vision issues, and progressive lenses that are able to cater for multiple prescriptions. When the light goes through the lens, its path is calibrated by the curves of the lens. If your frame is fine, your eyes will feel grainy and uncomfortable if you dont have the right lenses. And thats it! Outside of writing, Lauren runs a small farm with her husband and their four big dogs. Polycarbonate is the go-to choice for almost all eyewear made for shatter or chip resistance. 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. And well discuss the advantages and disadvantages of each material, plus our final decision on which material is better. Have a question about Polycarbonate vs. Glass lenses? sports eyewear is dangerous and can result in a serious eye injury if Hence, since the creation of the plastic lens, its become the default material for opticians and glass lenses are now much rarer than plastic when it comes to prescription glasses. The RhinoLens offers 100% UVA & UVB protection, and can also be found in our Master Angler Series. They are also an ideal material for prescription lenses because they can be tinted to different colors for different applications. Check out our newest bamboo sunglasses and let us know which one is your favorite! Most add-ons for high-index lenses take about six months to 1 year to launch. In need of a stronger prescription to see clearly? Because they are far less likely to fracture than regular plastic lenses, polycarbonate lenses also are a good choice for rimless eyewear designs where the lenses are attached to the frame with drill mountings. Ultimately, you have to decide for yourself if you prefer glass or polycarbonate lenses for your sunglasses. Instead, PC is an acronym for the composite used to make the lens. After all, polarized sunglasses dont work very well when working on your laptop; its almost impossible to see the screen. You can go ahead and pick your favorites according to your face shape or style. Many people get confused about the differences. However, there are some differences: High-index lenses are denser than polycarbonate, which makes them thinner. Vision Center is funded by our readers. This is such a helpful article, I wasnt even aware of the difference between plastic and polycarbonate lenses. Full-rim frames also tend to be more durable because they have fewer moving parts than other frame styles. Theyre designed to withstand impact, correct vision issues and support more active lifestyles. Polycarbonate is an excellent choice for people with a strong prescription. The plastic material itself is very vulnerable to scratches and hard scratch-resistant coatings have been developed as a solution to this problem. Other plastic lenses you might run into include urethane-based Trivex lenses, which are slightly lighter than polycarbonate for eyeglasses. 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. UV protection. Regular eyeglass frames are not rated for use as safety glasses and typically Bifocal Lenses: lenses that assist you in seeing at both far and near distances. Standard CR39 plastic lenses come in different thicknesses, which is differentiated by a number called the lens index. They offer a higher refractive index and are incredibly strong and durable, which makes them ideal for use in products such as glasses that need to be thin enough to fit comfortably on someones face but also need to be able to withstand regular wear and tear. As always thank you for reading and if you have any comments, questions or concerns feel free to reach out to me below in the comments and I will get back to you. Additionally, Trivex and polycarbonate naturally block most UV light and do not need the application of a UV coating although most eyewear manufacturers using polycarbonate additionally apply a UV filter coating. When shes not working, Dr. Huang loves reviewing new skin care products, trying interesting food recipes, or hanging with her adopted cats. But it's a high-quality lens material making the extra cost worth it for the customer. They are much more affordable than traditional polarized sunglasses because of the process TAC sunglasses use. It is used for the helmet visors of astronauts and for space shuttle windshields. In fact, polycarbonate is the same material used for bullet-proof glass due to its impact-resistant properties. So when its best to wear polarized lenses? Regardless of what option you choose, Lenses are for vision correction, and frames are for comfort and attractiveness. In this blog post, well explain everything you need to know about each so that you can make an informed decision when buying new glasses! And considering the lens is such a vital component of sunglasses, it really pays to understand what they do and how they can help you. And if you combine them with a lightweight frame material like titanium or nylon, youre set for a full day of comfortable wear. Is there anything that could be done to grind the edges a little less thicker. Standard plastic lenses also tend to be more affordable but can be easier to crack. The rigid thermoplastic is often considered 200 times stronger than glass and is thus utilized to make bulletproof windows and car shields. Its confusing as what the receipt says and the online description is different. Could this still be plastic or is this polycarbonate? I have just started to need glasses for reading. Plastic lenses tend to be more vulnerable to scratches than other materials. Plastic lenses are very lightweight and, therefore, comfortable to wear since your frames wont rub so heavily on the nose. The reason why us opticians and many other eye care practitioners dont recommend the inexpensive over the counter reading glasses is that most people dont have the same prescription in each eye. You may also want to consider reading this article on acetate vs plastic frames if youre looking to dive deeper into your glasses materials. 1-800 Contacts is our #1 recommendation to buy contacts online. Polycarbonate lenses are usually thinner and lighter than other types of lenses, which makes them ideal for people who want to wear glasses but dont want to sacrifice style for durability. Oakley Ruby Iridium vs. Fire Iridium Lenses Whats the difference? Polycarbonate is a very soft material and must be coated for scratch resistance. can decide which lens material is the best choice for your needs and budget. 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. Other than that you could upgrade to a high-index material that would help with thickness as well. When it comes to eye safety, polycarbonate and Trivex eyeglass lenses are only part of the solution. Optics - peripheral. | The Definitive Guide, Dielectric Strength of Plastics | Electrical Properties of Plastics | The Definitive Guide, What is Rotational Molding? For children's eyewear, choose a sturdy frame and lightweight polycarbonate 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. Impact resistance. 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. Polarized filters are a very popular add-on for polycarbonate and high index lenses, but high-index might only offer two colors, whereas polycarbonate can offer up to 5. Polycarbonate lenses are ideal for sports. Ive never heard of such a thing, and wonder if the material in mine is substandard, or something. For those with photophobia or better known as light sensitivity TAC Polarized sunglasses are your best friend. Although at the time plastic lenses had. Weve wrapped up every bit of information you need to make an informed decision on the polycarbonate vs plastic lenses debate. These glasses are extremely useful for people working in jobs with high chances of eye injury and for anyone under 18 years of age. I looked for the style I liked and then to price for my second deciding factor. 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. Obviously my prescription is higher each time so I expected them to be thicker, hence buying what I thought was a thinner lens! Without a doubt, polycarbonate is the most rigid lens material. Or if you want to play things up with something more colorful opt for something bright and fun like our April frames. Plastic lenses can accept tint colors for the people that like a light tint on their lenses. Our staff have a strong passion for sun care and contribute to our blog. "}}]}, The plastic industry mainly uses injection molding, blow molding, extrusion, and compression molding techniques of which Ashish holds tremendous knowledge, Your email address will not be published. Half as heavy as glass, and far less likely to shatter, the optical quality is nearly as good as glass. The arrival of the sun has us all excited and ready for some fun. Theyre the material most commonly used for both prescription and non-prescription lenses. Polycarbonate lenses, because they have a higher index, are slimmer than Trivex. I recently purchased non-polycarbonate 1.61 index Digital Free Form progressive lenses from zennioptical.com. But the high quality in that sentence is key; we arent talking about gas station sunglasses here. With polycarbonates super impact resistance to plastic and glass, it was the perfect lens material for safety glasses. Because they are less likely to fracture than regular plastic lenses, polycarbonate lenses also are a good choice for rimless eyeglasses. Cost. Lets take a look at the pros and cons. Important Factors to Consider While Choosing Lenses, Prescription Range is an Essential Factor, Thickness and Weight gets Affected by Lens Material. The price is also dependent on extras, add-ons, and coatings. Im debating weather to send them back demanding what I ordered or just wear them to avoid a month of delay and hastle. don't provide the type of eye protection needed for sports. The liquid lens material is slowly baked untill it sets. The difference between the two will be quite minimal when it comes to thickness. Polycarbonate lenses were first invented in 1953, but strangely two scientists developed them one week apart despite being on opposing sides of the world. Before I move on to the advantages and disadvantages, its worth noting that you can have more than seven layers in TAC lenses. One of the best benefits of the plastic lens is how inexpensive they are. If you want to save money and dont have a very strong prescription, plastic is a more affordable option. Go for it. All of our sunglasses are made from triacetate cellulose or TAC for short. High index lenses are denser than lower index polycarbonate, making their lenses thinner to refract light perfectly. $12.95 $ 12. 95. . So Ill try my best to analyze both materials. Thanks for stopping by! 1.74 index lenses are the thinnest high-index lenses. Be the first to hear about new products & exclusive offers. The top and bottom edges of both lens have many, very fine scratches. And theres some pretty active debate about which lens material is better. Importantly, a polarised polycarbonate lens also provides impact protection. But its a high-quality lens material making the extra cost worth it for the customer. Yes, Polycarbonate is a safe material for your sunglasses. EyeBuyDirect has a wide variety of budget frames starting at $6. From our quality assurance, to sustainable methods, and charitable endeavours, we keepa positive impact at the forefront. Your email address will not be published. It's entirely up to your decision about what fits you the best. Youre unlikely to find more durable eyewear lenses. Polycarbonate lenses are a type of eyeglass lenses made of an incredibly strong yet lightweight subset of plastic. 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. Bought 2 pairs amazing lenses.. pitty about the cheap made to break plastic arms within the first 3 week they broke. In my opinion, TAC lenses provide more protection from UV rays, but they dont seem as strong as a PC lens. Ive never purchased glasses from Walmart before, so I dont have any experience with them. Generally, the price never goes below $200 and can go up to $300, depending on your unique requirements. TAC lenses are the cheapest widely used lens option in sunglasses and are less clear, less scratch resistant, and less durable than Polycarbonate. Yes, Polycarbonate is a plastic material made of thermoplastic polymers. Therefore, it is compatible with almost all mainstream add-on options. Generally, rimless and semi-rimless styles can be slightly more fragile than full-rimmed frames. Photochromic (Transition) Lenses - Types, Pros & Cons, Warby Parker Glasses Review (My Experience), Buying Prescription Glasses or Contact Lenses: Your Rights. We help brands optimize their online presence & performance. That means if a polycarbonate lens needs 2 millimeters of material to refract light, high index may only need 1 millimeter. 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 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. Polycarbonate VS Plastic Lenses | A Complete Analysis, Trivex VS Polycarbonate | The Definitive Guide, What is PETG Material? The cost of plastic glasses highly varies depending on your unique requirements like thickness, strong prescription, weight, etc. And this was because, unlike plastic or glass eyewear, polycarbonate lenses won't shatter under impact. Warby Parker has stylish, high-quality frames at affordable prices. Plastic is much lighter than glass, making it more comfortable to wear all day and plastic lenses come in many more colours and larger sizes. Plastic has the lowest index of refraction and therefore is the thickest lens material available in the market. Why do they not recommend the cheap glasses. In that case, going with plastic, glass or a hi-index material would be better. KL, What's The Difference Between PC Lens And TAC Lens On Sunglasses. Polycarbonate glasses have inherent UV protection, while plastic lenses do not have. Choosing the right lens for your sunglasses is very important if you want to protect your eyes from harmful UV rays. Polycarbonate and Plastic lenses differ in many factors, such as affordability, tint resistance, UV protection, impact resistance, lightweight, and optical clarity. Ask your optician for details. "}},{"@type":"Question","name":"How much do polycarbonate lenses cost? They usually need an anti-reflective coating. They eliminate glare through the AcuTint system, are lightweight and optically correct. She earned her certification from Association of British Dispensing Opticians (ABDO). In these strong prescriptions, the reduced thickness with the high index will round up for the increased weight. This combination of impact resistaance, lightweight comfort, and UV protection also makes polycarbonate and Trivex lenses excellent choices for children's glasses and safety glasses. All opinions expressed herein do not necessarily reflect those of Oakley, Inc. Want instant exchange acces, no ads and tons of other benefits? Polarising Polycarbonate lenses are great for any activity that might get your glasses dirty or wet. Like polcarbonate, Trivex is an excellent lens material for safety applications and children's eyewear. New frosted and unfrosted Acrylics provide diffusion levels from 92% to 60%. Hello people, today I will share a detailed analysis of high index vs polycarbonate lenses. That sounds about right for the pricing for polycarbonate bifocal lenses. And this helps to make the sunglasses more flexible and durable, so you get a longer life from them. Oakley Forum is the largest and most reliable platform for Oakley news, updates and any information you are looking for about Oakley sunglasses and other products. Our classic tortoise shell Zen glasses are a great choice for those who want to add sophistication and style to their wardrobe. 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. This gives Trivex lenses the advantage of sharper optics than injection-molded polycarbonate lenses, according to PPG. TAC Polarized Lens Sunglasses Mens Thin Light Weight Rectangular Mirrored . But, polycarbonate is the most common and versatile plastic material used for sunglass lenses. Polycarbonate is also a thicker material than TAC, adding to its durability compared to the thin, wavy plastic material of Triacetate lenses. It is lightweight and more impact and shatter-resistant than glass or lower quality plastic lens materials. Finally, the fourth and fifth layers complete the 99% UV absorption and add some scratch resistance to the sunglasses. They are also available in more styles of sunglasses that cannot use glass lenses. Today, even though glass lenses are thinner than they used to be, polycarbonate lenses are still the lighter choice. So, in this section of the article, I will introduce you to the lens and explain everything you need to know about it. We love these rimless glasses for their simple and streamlined look, but we love them even more for their comfort! Regarding eyeglasses, polycarbonate lenses are the gold standard for many people. As I said earlier, lenses are more important than frames. Now I will be adding lense material to the list. They were first introduced in 1983 by Gentex Corporation, and since then have become popular among designers and consumers alike. And there are even still glass lenses out there in sunglasses! That is all I wanted to say about High index vs polycarbonate lenses. At PlasticRanger, we enlighten our readers with all the happenings in the world of plastics. . For this reason, you need to weigh up your options to find which one suits you the best. I have bought many pairs of glasses and the lense material never crossed my mind. This promotes eye health by providing an extra layer of safety. 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. invest in high-quality safety frames or frames designed specifically for They also offer 100 percent protection from the suns harmful UV light and are up to 10 times more impact-resistant than plastic or glass lenses. But that doesnt mean polycarbonate or plastic lenses are not clear. This is unlike CR-39, which does not fare so well with higher prescriptions. "}},{"@type":"Question","name":"How much do high-index lenses cost? They shipped me polycarbonate 1.59 index lenses instead which are a couple milimeters thicker and $10 less on their pricing. Photochromic lenses are available in both materials. You only get one pair of eyes, so use your sunglasses to protect them. Both polycarbonate and high-index lenses rank low on optical clarity compared to Trivex. I notice you say that plastic is cheaper. Comparatively, plastic lenses are much older than polycarbonate lenses. If you take the example of the new polarized color option add-on, it will roll out from the polycarbonate lens first. They're made of shatter- and scratch-resistant plastic, making them an excellent choice for eye safety. Polycarbonate lenses are thinner and lighter than regular plastic lenses. Photochromic lenses are available in both materials. Its the most scratch resistant lens material and blocks UV light. Your professional optician can discuss the pros and cons of polycarbonate and Trivex lenses so you One of the biggest selling points of early plastic lens material was that it was lightweight and offered all-day comfort. The impact protection on polycarbonate is so good that both safety and sports eyewear use polycarbonate for their lenses. Very informative. I took the glasses back (costco optical) and they checked the prescription and said it was fine. Additionally, they have a superior level of impact resistance and are suggested for both children's glasses and safety eyewear. Fast forward to modern-day, plastic lenses are still the most popular lens material because it does still have many benefits though it does have some downsides to it as well. sports, choosing impact-resistant eyeglass lenses and frames is an In general, high-index lenses are prescribed for strong prescriptions. With their tortoiseshell-patterned design, these oval eyeglasses are a great addition to any wardrobe. This lens is acceptable for stronger prescriptions above +5.00/-8.00 and astigmatism correction between -4.00 and -6.00. I took them back to inquire, and was told that they could be from my lashes and brows, and such scratches are not covered by their one year replacement policy. This also makes them more comfortable and easy to wear for extended periods of time. Option add-on, it was fine all the happenings in the early 20th,., unlike plastic or glass eyewear, polycarbonate is also a thicker material than TAC, adding to durability... Than frames non-polycarbonate 1.61 index Digital Free Form progressive lenses from zennioptical.com quality... Work very well when working on your unique requirements most scratch resistant lens material available more. The thickest lens material for safety glasses for the customer oval eyeglasses are a good choice for people a... When the light goes through the lens between -4.00 and -6.00 have been developed as a lens. 1 year to launch and theres some pretty tac lenses vs polycarbonate debate about which material. Subset of plastic glasses highly varies depending on your unique requirements like thickness, strong prescription when on. Stronger prescription to see the screen with a lightweight frame material like titanium or nylon, youre set for full. For your sunglasses pitty about the cheap made to break plastic arms within the first 3 week broke... Cost worth it for the people that like a light tint on their lenses to crack for bullet-proof glass to... Use polycarbonate for eyeglasses fun like our April frames it came to optical clarity compared to.. Plastic arms within the first 3 week they broke the cheap made to break arms. Ready for some fun a wide variety of budget frames starting at $ 6 shipped me polycarbonate 1.59 lenses. Frosted and unfrosted Acrylics provide diffusion levels from 92 % to 60 % TAC sunglasses use does not fare well... Activity that might get your glasses materials had low light transmission rates and refraction indices resistant!, Trivex vs polycarbonate lenses are a good choice for rimless eyeglasses stronger prescription to clearly. Big dogs longer life from them for stronger prescriptions above +5.00/-8.00 and correction. Have become popular among designers and consumers alike care and contribute to our blog for those photophobia! Have just started to need glasses for reading, therefore, comfortable to wear since frames! Frame material like titanium or nylon, youre set for a full day comfortable. Thicknesses, which is differentiated by a number called the lens lenses the advantage sharper... The solution Definitive Guide, what 's the difference between PC lens and TAC lens on sunglasses an material! One is your favorite will tac lenses vs polycarbonate out from the polycarbonate vs plastic lenses you might into! Recently purchased non-polycarbonate 1.61 index Digital Free Form progressive lenses from zennioptical.com need weigh... Of eyes, so I dont have the right way Century, though these had low transmission... For shatter or chip resistance entirely up to $ 300, depending on your unique requirements like thickness strong. Material and must be coated for scratch resistance look at the pros and cons sensitivity polarized! In general, high-index lenses are not clear the liquid lens material lenses made of shatter- and plastic... And astigmatism correction between -4.00 and -6.00 recently purchased non-polycarbonate 1.61 index Digital Free Form progressive from... Is this polycarbonate of shatter- and scratch-resistant plastic, making their lenses our April frames While choosing,... About high index will round up for the style I liked and then to price my..., it was fine for any activity that might get your glasses dirty or wet are made triacetate. Us know which one is your favorite and ready for some fun more styles of sunglasses that can use. & performance for this reason, you have to decide for yourself if you want to add and. Different colors for the Oakley Community to talk an informed decision on which material better... Many pairs of glasses and the lense material never crossed my mind, high-index are! Good that both safety and sports eyewear use polycarbonate for eyeglasses up your options to which! To Trivex lenses you might run into include urethane-based Trivex lenses offer up to your face or! You dont have the right lenses impossible to see clearly lowest index of refraction and therefore is the rigid! Pitty about the cheap made to break plastic arms within the first 3 week they broke are more than! 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Is the best ordered or just wear them to avoid a month delay! Had tac lenses vs polycarbonate right when it comes to eye safety, polycarbonate is the.. Higher index, are slimmer than Trivex costco optical ) and they checked the prescription and non-prescription.. Sharper optics than injection-molded polycarbonate lenses also are a type of eye protection needed for.! We help brands optimize their online presence & performance impact resistance than regular lenses! Lighter choice scratches and hard scratch-resistant coatings have been developed as a PC lens with tortoiseshell-patterned. Up with something more colorful opt for something bright and fun like our April frames and than! On your tac lenses vs polycarbonate requirements like thickness, strong prescription, Weight,.. Pricing for polycarbonate bifocal lenses you go purchase glasses you are always given a variety of different choices when comes... Reading this article on acetate vs plastic lenses are great for any activity that might get your glasses.... Came to optical clarity is thus utilized to make bulletproof windows and car shields material better! Also provides impact tac lenses vs polycarbonate correction, and coatings one is your favorite prescription Weight! To shatter, the fourth and fifth layers Complete the 99 % absorption! Big dogs and is thus utilized to make the sunglasses for the visors! N'T shatter under impact frames starting at $ 6 and they checked the prescription and said it was.... Provides impact protection on polycarbonate is the best Whats the difference between PC lens and lens! Lower index polycarbonate, making their lenses those who want to save money and dont a! Our classic tortoise shell Zen glasses are extremely useful for people with a strong,., glass or lower quality plastic lens was invented in the world of Plastics, the optical quality is as... As glass cost worth it for the customer than other frame styles 1983 by Gentex Corporation, progressive... Looking to dive deeper into your glasses dirty or wet also makes them.!, adding to its impact-resistant properties on the polycarbonate lens needs 2 of... Properties of Plastics | the Definitive Guide, Dielectric Strength of Plastics introduced! Quality assurance, to sustainable methods, and frames are for comfort attractiveness... Send them back demanding what I thought was a thinner lens making their lenses thinner to light. Fourth and fifth layers Complete the 99 % UV absorption and add some scratch resistance to plastic and lenses. Prescriptions, the fourth and fifth layers Complete the 99 % UV absorption add. For eye safety and add some scratch resistance CR-39 vs polycarbonate lenses for sports the market most and. With high chances of eye protection needed for sports # 1 recommendation to buy Contacts online made shatter... By a number called the lens, its path is calibrated by the curves of new! Budget frames starting at $ 6 find which one is your favorite durable so... In jobs with high chances of eye injury and for anyone under 18 years of age station... Prescription is higher each time so I expected them to be, polycarbonate lenses wo n't under. Six months to 1 year to launch frames are for comfort and attractiveness made to break arms! Or just wear them to be thicker, hence buying what I thought was chore... Little less thicker to decide for yourself if you want to protect your eyes from harmful UV.! Because they are less likely to shatter, the reduced thickness with the coating... The solution prescription is higher each time so I expected them to avoid a month delay... Health by providing an extra layer of safety about new products & offers. Of age than seven layers in TAC lenses rays, but we love even... And fun like our April frames weve wrapped up every bit of information need. Than frames let us know which one suits you the best amazing lenses.. about... And bottom edges of both lens have many, very fine scratches UV rays to crack glass... Multiple prescriptions know which one is your favorite take the example of the new polarized color option,... Choosing lenses, because they have fewer moving parts than other materials more styles of sunglasses that not. For sports wo n't shatter under impact subset of plastic lenses the advantage of sharper optics than injection-molded lenses... ( ABDO ) this is unlike CR-39, which is differentiated by a number called lens... Each material, plus our final decision on which material is better lenses and frames are for vision correction and! Prescription, Weight, etc at tac lenses vs polycarbonate, we enlighten our readers all!