For this reason polycarbonate has become the standard lens material for sports eyewear (including shooting eyewear), safety eyewear and childrens eyewear. If you are looking for high index lenses (1.74), you have to pay between $180 and $230. New frosted and unfrosted Acrylics provide diffusion levels from 92% to 60%. However, there are some differences: High-index lenses are denser than polycarbonate, which makes them thinner. Therefore, ","acceptedAnswer":{"@type":"Answer","text":"Polycarbonate lenses, with their immense number of benefits, are also budget-friendly. Both polycarbonate and high-index lenses rank low on optical clarity compared to Trivex. Or want to know more? Polycarbonate lenses have become the standard for safety glasses, sports goggles and children's eyewear. But its a high-quality lens material making the extra cost worth it for the customer. The information provided on VisionCenter.org should not be used in place of actual information provided by a doctor or a specialist. The lower the index, the more material will be needed to refract light precisely. The price is also dependent on extras, add-ons, and coatings. Naturally resists scratches without a scratch-resistant coating, Less scratch-resistance than glass without a coating. So, if you want to be in the know about the different styles of lenses you have available in sunglasses, dont go anywhere; everything is about to be explained: When you first hear about PC lenses in sunglasses, you might have thought they are sunglasses lenses that you can use with your computer. Both options have their pros and cons. 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. Although at the time plastic lenses had. The content on this site is for informational purposes only. This is such a helpful article, I wasnt even aware of the difference between plastic and polycarbonate lenses. All my years as an optician I have never recommended plastic if polycarbonate was an available option. Thanks for sharing this informative blog. Having a conversation with your optician about your eyewear needs and shopping around for the best price is wise. The benefits dont stop there though with polycarbonate being thinner, more lightweight and more resistant to scratches as well. The difference between the two will be quite minimal when it comes to thickness. Save my name, email, and website in this browser for the next time I comment. You can wear polycarbonate lenses with virtually any full-rim style. I have polycarbonate for the first time. Thank you for reaching out. Ive never purchased glasses from Walmart before, so I dont have any experience with them. Polycarbonate is an excellent choice for people with a strong prescription. The CR stands for Columbia Resin which is the polymer that the material is made out of and the 39 means that there were 38 other Columbia Resins that didnt make the cut for optical lenses. Polycarbonate lenses are designed for strength, yet they're thin and lightweight. Polycarbonate lenses give the benefits of sunglasses protection by inherently blocking 100 percent UV rays without needing a special coating. In the 1970s, they used the lens in astronauts' helmet visors, and in the 1980s, industries started to wear them as an alternative to plastic or glass eyewear. Like polcarbonate, Trivex is an excellent lens material for safety applications and children's eyewear. Since it is a relatively soft material, a scratch-resistant coating is recommended for polycarbonate lenses. Boll Bolt 2.0 Titanium Volt+ Ultraviolet Polarised, Boll Bolt 2.0 S Creator Green Volt+ Gun Polarised, Boll Bolt 2.0 S Volt+ Cold White Polarised, Boll Brecken Floatable Black-Red Polarised Offshore Blue, Secured online ordering using SSL encodings. These lenses provide visual clarity without adding too much thickness. GlassesUSA has a huge selection of contacts, glasses, & sunglasses. Additionally, they have a superior level of impact resistance and are suggested for both children's glasses and safety eyewear. Most opticians would recommend that over a minus 7 or a plus 5 should always be made with high-index lens materials. Weve wrapped up every bit of information you need to make an informed decision on the polycarbonate vs plastic lenses debate. The last two layers, are shock proof layers that increase impact and scratch resistance. And thats it! Polycarbonate lens didnt truly gain traction among the optical industry until more recently due to various problems with the material clarity and manufacturing. Polycarbonate lenses are another type of plastic material. Dapper is a sleek, modern take on rimless glasses. Depending on where you are purchasing your glasses at online eyeglass retailers offer free polycarbonate lenses with their glasses. Building a TAC lens includes forming several layers of lenses to produce your high-functioning sunglasses. 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. 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. They are also more difficult to work with, which means it takes longer to manufacture polycarbonate lenses. Even the most modern glass lens is more likely to break or shatter than a polycarbonate lens. Plastic lenses are very easy to manufacture and dont come with a high price tag. Polycarbonate lenses are extremely popular in the lens market. For this reason, the lens requires a scratch-resistant coating applied. Many online eyeglass retailers offer polycarbonate standard with their glasses at very affordable prices. High index lenses are denser than lower index polycarbonate, making their lenses thinner to refract light perfectly. You are using an out of date browser. Not only that our sunglasses are fashionable and sustainable, but also provide maximum UV protection for driving and outdoor activities. Weight. It is also much less expensive to use than glass. 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. The same property, which makes it thinner, also makes it heavier. 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! Yes, Polycarbonate is a plastic material made of thermoplastic polymers. Benefits of polycarbonate lenses include: Best Place to Buy Contacts: 1800 Contacts. Rest assured, all of our sunglasses feature UV400 TAC Polarized lenses that were manufactured using a 7 layer process in accordance with the international sunglass lens standard. They are also an ideal material for prescription lenses because they can be tinted to different colors for different applications. Go for it. Are contact lenses a good choice for kids? Plastic frame ; mirrored lens ; Polarized ; Mirror Coating coating ; Lens width: 57 millimeters ; Lens height: 40 millimeters ; Bridge: 15 millimeters Lauren completed a bachelor's degree in biopsychology from The College of New Jersey and non-degree graduate coursework in public health at Princeton University. Theyre also a fantastic choice if you wear prescription eyeglasses on a daily basis and need a sturdy lens that can stand up to your lifestyle. SEE ALSO: How To Clean Glasses Without Scratching Your Lenses! Polycarbonate glasses have higher impact resistance and offer greater protection than plastic lenses. Regarding eyeglasses, polycarbonate lenses are the gold standard for many people. Crescent Plastics extrudes Acrylic in custom blends to provide the right amount of diffusion. Polycarbonate lenses were first introduced into the optical world through safety glasses. Materials like crown glass, Trivex, and CR-39 steal the show. 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. Customizable lenses for your vision needs. But today polycarbonate lenses are gaining more control of the optical market and is a very popular choice of lenses. In an eyeglass lens manufacturing process called injection molding, the polycarbonate pellets are heated until they melt. | 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. 2018-2023 EyeHealthHQ.com. This also makes them more comfortable and easy to wear for extended periods of time. 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. 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. Polycarbonate lenses protect your eyes from the full spectrum of UV radiation, including UVA, UVB, and UVC rays. But it's a high-quality lens material making the extra cost worth it for the customer. Ultimately, you have to decide for yourself if you prefer glass or polycarbonate lenses for your sunglasses. Standard CR39 plastic lenses come in different thicknesses, which is differentiated by a number called the lens index. I am interested in: choosing a selection results in a full page refresh. They're 35 times stronger than CR-39, shatterproof and scratch resistant. Youre absolutely right! Ive never heard of such a thing, and wonder if the material in mine is substandard, or something. They are also available in more styles of sunglasses that cannot use glass lenses. 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 Here the polarised film is sandwiched between two layers of polycarbonate meaning the polarised film can never wear out. $12.95 $ 12. As I said earlier, lenses are more important than frames. 1.67 index lenses are ideal for prescriptions under +5.00/-8.00 and astigmatism correction between -3.00 and -4.00. A quality pair of prescription glasses would eliminate that strain. Remember, plastic and polycarbonate lenses are both great choices for eyeglasses. Ultimately the decision is up to you, I am just here to show you the benefits of each. I only clean them with Zeiss wipes, and never set them down flat on anything. Polycarbonate lenses, because they have a higher index, are slimmer than Trivex. sports eyewear is dangerous and can result in a serious eye injury if Just to add that polycarbonate is plastic. You can add various special coatings to polycarbonate lenses, including: Polycarbonate is also compatible with progressive lenses. In need of a stronger prescription to see clearly? Polycarbonate lenses are great for any activity that might get your glasses dirty or wet. I just bought 1 pair of glasses at Walmart and they hit me with 2 ea. When shes not working, Dr. Huang loves reviewing new skin care products, trying interesting food recipes, or hanging with her adopted cats. Check out ETD's selection of police car lights with TIR lenses. Polycarbonate vs. Trivex lenses: A quick comparison. 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! I have just started to need glasses for reading. Even if he or she does not participate in organized High index and polycarbonate lenses are great choices if youre looking for an alternative to metal glasses. Lenses are mere objects but integral to people who have to wear them constantly. Polycarbonate lenses are a popular choice, but theyre not for everyone. That is all I wanted to say about High index vs polycarbonate lenses. Polycarbonate (PC) Polycarbonate lenses are light, and are also almost shatter-proof; they also have high UV absorption. Most add-ons for high-index lenses take about six months to 1 year to launch. Why do they not recommend the cheap glasses. Important Factors to Consider While Choosing Lenses, Prescription Range is an Essential Factor, Thickness and Weight gets Affected by Lens Material. Eyeglass temples: How do you know if they're the right length? Trivex is another lightweight, impact-resistant material for eyeglass lenses. She's an experienced medical writer passionate about creating informative, clear, and captivating content. 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. The PC lens is extremely highly resistant to impact and wont shatter. When you grab your favorite pair of, Not only that our sunglasses are fashionable and sustainable, but also provide maximum UV protection for driving and outdoor activities. Therefore, it is compatible with almost all mainstream add-on options. That means if a polycarbonate lens needs 2 millimeters of material to refract light, high index may only need 1 millimeter. Original version of this article was by Liz DeFranco, ABOC, NCLC. Venti20 Sunglasses - Lens Specifications and Glossary. On the other hand, polycarbonate lenses come with a coating that allows them to tint way more than the high index. Bifocal Lenses: lenses that assist you in seeing at both far and near distances. Polycarbonate is lightweight and offers the highest impact resistance. If you feel like it is worth the time and hassle then send them back. Polarising While we prefer polycarbonate lenses, both types have advantages and disadvantages. Polycarbonate is a very soft material and must be coated for scratch resistance. KL, What's The Difference Between PC Lens And TAC Lens On Sunglasses. These lenses provide visual clarity without adding too much thickness. Our Madison frames are the perfect blend of vintage and modern style, and offer full-rim durability. 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. People with eyeglass prescriptions stronger than +/- 4.0 may need high-index lenses. High index and polycarbonate lenses are great choices if you're looking for an alternative to metal glasses. Plastic has the lowest index of refraction and therefore is the thickest lens material available in the market. HO KING COMM CTR Polycarbonate lens is lighter and thinner than glass, making it more comfortable to wear for long durations. Liingo Eyewear is another great option to buy glasses online. The fourth and fifth are UV absorbing layers that absorb over 99% ultraviolet rays. Through her writing, Dr. Huang enjoys educating patients on how to lead healthier and happier lives. Triacetate (TAC) TAC lenses are light and thin, they are also tough and flexible. They're made of shatter- and scratch-resistant plastic, making them an excellent choice for eye safety. Thanks for reading. What kind of lenses do you have in your glasses? Today with the introduction of polycarbonate and hi-index lenses the drawbacks of plastic are highlighted even more. Anything above a minus five and above plus three is considered in the high index range. Also known as poly, this flexible plastic was designed for use in astronaut gear. In general, high-index lenses are prescribed for strong prescriptions. Plastic lenses tend to be more vulnerable to scratches than other materials. For those with photophobia or better known as light sensitivity TAC Polarized sunglasses are your best friend. This lens is acceptable for stronger prescriptions above +5.00/-8.00 and astigmatism correction between -4.00 and -6.00. ","acceptedAnswer":{"@type":"Answer","text":"Yes, high index lenses are more expensive than polycarbonate lenses because they are made from expensive materials, and the manufacturing process is difficult and harder to grind. Although polycarbonate lenses are not as clear as glass lenses, most people do not notice the difference. "}},{"@type":"Question","name":"How much do high-index lenses cost? 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. With TAC, as the polarised film is on the front it can scratch and eventually lose some of its polarising properties. Does it really hurt your eyes? $80.00 charges for the FT poly. Medicaid: Eligibility and Vision Benefits. The reflections from water can be reduced just by wearing polarized lenses, which can also enhance your ability to spot objects below the waters surfacefashionable and a great help when boating or fishing. So when its best to wear polarized lenses? These lenses are up to 30% thinner than regular plastic or glass lenses. Super thin high index plastic is sometimes used for prescription eyeglasses. Your professional optician can discuss the pros and cons of polycarbonate and Trivex lenses so you It is lightweight and more impact and shatter-resistant than glass or lower quality plastic lens materials. When others look at you with your glasses on, they notice the frame, but the glasses are responsible for giving you clear vision. The frames tend to be less than durable, so the glasses are so cheap. Single Vision Distance: Helps you to see clearly at a distance. Hi Eleanor, if you have a strong prescription one of the best ways to ensure your lenses come out as thin as possible is by making sure that the frame fits well. At the end of the day, it just depends on how well you take care of your lenses. Yes, Polycarbonate is a plastic material made of thermoplastic polymers. The second and third layers of the TAC sunglasses provide strength and resistance from impact and movement. 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. I thought I was purchasing Essilor Varilux X Progressive Lenses, and what they described as their second best lens, the Superior High Index A thinner, flatter and lighter premium lens. Because these lenses are not as scratch-resistant as glass, an additional scratch-resistant layer is required. The first is a polarizing layer that provides more than 100% polarization that absorbs glare. There are plenty of lower-quality plastic lenses that you should definitely avoid. If you go through them to make a purchase we will earn a commission at no extra cost to you but helps support our website. Without a doubt, polycarbonate is the most rigid lens material. Polycarbonate is an excellent choice for people with a strong prescription. Polycarbonate Vs High Index Lenses: Which One Triumphs For Clarity? Obviously my prescription is higher each time so I expected them to be thicker, hence buying what I thought was a thinner lens! This is where polarized lenses come in handy because they have a filter specially made to block this glare. Its the most scratch resistant lens material and blocks UV light. Yes, high index lenses are more expensive than polycarbonate lenses because they are made from expensive materials, and the manufacturing process is difficult and harder to grind. If your frame is fine, your eyes will feel grainy and uncomfortable if you dont have the right lenses. scratch-resistant coatings can make the surface of polycarbonate and Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. 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. And this helps to make the sunglasses more flexible and durable, so you get a longer life from them. Polycarbonate lenses are available in a wider variety of lens designs (e.g., progressive lenses and other multifocals) than Trivex lenses. But it is your opticians job to explain all the differences to you and give you a recommendation based on your prescription. The first layer of the sunglasses is the polarizing core, and its used to absorb the glare produced from the light shining on objects. Page published on Wednesday, February 27, 2019. Polycarbonate is also a thicker material than TAC, adding to its durability compared to the thin, wavy plastic material of Triacetate lenses.
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