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Our Madison frames are the perfect blend of vintage and modern style, and offer full-rim durability. Your professional optician can discuss the pros and cons of polycarbonate and Trivex lenses so you Were going to look at the differences between todays plastic and glass lenses. Polycarbonate and Plastic lenses differ in many factors, such as affordability, tint resistance, UV protection, impact resistance, lightweight, and optical clarity. Required fields are marked *. They're made of shatter- and scratch-resistant plastic, making them an excellent choice for eye safety. "}},{"@type":"Question","name":"How much do high-index lenses cost? Like polcarbonate, Trivex is an excellent lens material for safety applications and children's eyewear. Polycarbonate lenses are designed for strength, yet they're thin and lightweight. 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. High index lenses rank slightly higher than polycarbonate. Join today, share your Oakley collection or even find new Oakley sunglasses for sale. Plastic lenses have a higher Abbe value than polycarbonate. You only get one pair of eyes, so use your sunglasses to protect them. High-quality polycarbonate lenses offer excellent clarity for a pair of eyeglasses or sunglasses. You can usually find some single vision lenses for around $30 and some bifocals for $50. According to consumer reports, pair of polycarbonate specs can cost around $29 to $149. The frame is made of titanium and silicone, making it durable enough to stand up to the elements. 2-16 FAYUEN ST MONGKOK Is there anything that could be done to grind the edges a little less thicker. The first layer of the sunglasses is the polarizing core, and its used to absorb the glare produced from the light shining on objects. Polarising 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. Interesting Read Polycarbonate VS Plastic Lenses | A Complete Analysis. 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. However, the added durability of the polycarbonate material means that these glasses should hold up much better for everyday use than your average plastic lenses. 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. Which eyeglass lenses are best for me and my vision. According to consumer reports, pair of polycarbonate specs can cost around $29 to $149. These lenses are up to 30% thinner than regular plastic or glass lenses. The best TAC Polarized Lens are those that block more than 99% of harmful UV rays with wavelengths up to 400 nanometers. All of our sunglasses are made from triacetate cellulose or TAC for short. Your email address will not be published. Most people cant assess color deformation at these levels. The PC lens is extremely highly resistant to impact and wont shatter. Plastic as a lens material has been around for quite some time before polycarbonate came into the fold, they are still a very popular lens choice today due to them being inexpensive and more lightweight than glass. Polycarbonate is still lighter, and can be made in higher index - meaning that a strong prescription lens can still be quite thin. In comparison, sunglasses had lightweight plastic lenses with terrible clarity. Polycarbonate glasses have inherent UV protection, while plastic lenses do not have. Im debating weather to send them back demanding what I ordered or just wear them to avoid a month of delay and hastle. Glass will always provide the best optical experience as glass refracts light much more efficiently than plastic. Weight. Very informative. 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. The same property, which makes it thinner, also makes it heavier. I have just started to need glasses for reading. One such type of lens was made from CR39 plastic, which is still widely used today. Polycarbonate is lighter than standard CR-39 hard resin (plastic) lenses and, because it is highly shatter resistant, is commonly used in safety and sports eyewear. Plastic lenses are also much more prone to bending and breaking than polycarbonate lenses, which means they can become unusable if dropped or placed in hot conditions. This promotes eye health by providing an extra layer of safety. They are also available in more styles of sunglasses that cannot use glass lenses. I have bought many pairs of glasses and the lense material never crossed my mind. These tints are available in a variety of colors including, brown, gray, yellow, red, blue, rose, green, and more. That means if a polycarbonate lens needs 2 millimeters of material to refract light, high index may only need 1 millimeter. | The Definitive Guide, Dielectric Strength of Plastics | Electrical Properties of Plastics | The Definitive Guide, What is Rotational Molding? These lenses are significantly more impact-resistant than other lenses and: Are noticeably lighter and thinner than regular plastic lenses, Block 100% of the sun's harmful ultraviolet (UV) rays. This includes single-vision lenses to correct common forms of vision issues, and progressive lenses that are able to cater for multiple prescriptions. Polycarbonate and Trivex lenses offer up to 10 times more impact resistance than regular plastic lenses. Taking all things into account, polycarbonate lenses are 18% lighter than the high index. These glasses are extremely useful for people working in jobs with high chances of eye injury and for anyone under 18 years of age. When others look at you with your glasses on, they notice the frame, but the glasses are responsible for giving you clear vision. Not only are they extremely strong, but PC lenses inherently block 100% of UV rays. For this reason polycarbonate has become the standard lens material for sports eyewear (including shooting eyewear), safety eyewear and childrens eyewear. Polycarbonate and Trivex lenses are much more impact-resistant than regular glass and plastic lenses (including other high-index lenses) because these lightweight lens materials are relatively "soft" which means they can absorb energy without lens fracturing. Impact resistance. And wearing them for long periods of time was a chore. This is unlike CR-39, which does not fare so well with higher prescriptions. Hi Huy, Most add-ons for high-index lenses take about six months to 1 year to launch. Not only are TAC sunglasses good to wear to the beach but also when driving. Youre absolutely right! 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. Both materials offer excellent impact resistance and UV protection. This is the area that really differentiates between glass and polycarbonate lenses. Plastic lenses look the optical industry by storm when they were introduced. 1. If your polycarbonate sunglass lenses do crack, check the manufacturer to see if they offer replacement lenses. The truth is that our eyes cant really detect the difference in clarity between glass and high-quality polycarbonate. 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! Hours: 9 a.m. - 12 a.m. EST, Monday - Friday. 2018-2023 EyeHealthHQ.com. 2000-2022 AAV Media, LLC. The information provided on VisionCenter.org should not be used in place of actual information provided by a doctor or a specialist. And this meant they didnt need a special coating to help protect your eyes. 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. They are much more affordable than traditional polarized sunglasses because of the process TAC sunglasses use. Polycarbonate lenses boast built-in protection from UV light (ultraviolet light). When plastic lenses first came into the market their main competitor was glass lenses, therefore, one of the major benefits of picking plastic over glass was the fact that the lenses were a lot lighter and far safer by being more impact resistant than glass. This type of lens is lightweight yet strong and resilient. Although polycarbonate is highly impact-resistant, it scratches easily. Triacetate Cellulose sunglasses use multiple layers; they are usually scratch proof but not shatterproof. Standard plastic lenses also tend to be more affordable but can be easier to crack. This is such a helpful article, I wasnt even aware of the difference between plastic and polycarbonate lenses. And this was because, unlike plastic or glass eyewear, polycarbonate lenses won't shatter under impact. 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. I have polycarbonate for the first time. or Trivex lenses. Keep in mind that we link these companies and their products because of their quality and not because of the commission we receive from your purchases. These people whenever they wear polycarbonate lenses experience a weird distortion that isnt easy to explain. There are also a limited range of colours available made from glass; for all these reasons glass is not used for sports eyewear. Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. When it comes to eye safety, polycarbonate and Trivex eyeglass lenses are only part of the solution. Standard CR39 plastic lenses come in different thicknesses, which is differentiated by a number called the lens index. The plastic material itself is very vulnerable to scratches and hard scratch-resistant coatings have been developed as a solution to this problem. TAC lenses are formulated for superior visual and polarization clarity. Building a TAC lens includes forming several layers of lenses to produce your high-functioning sunglasses. ($45 vs $55) An optical plastic lens was invented in the early 20th Century, though these had low light transmission rates and refraction indices. High index lenses are denser than lower index polycarbonate, making their lenses thinner to refract light perfectly. What kind of lenses do you have in your glasses? I am interested in: >. Hi Mary! Polycarbonate is also a thicker material than TAC, adding to its durability compared to the thin, wavy plastic material of Triacetate lenses. Trivex is another lightweight, impact-resistant material for eyeglass lenses. Optics - peripheral. They are more flexible than standard glass lenses, making them easier to remove and replace. Medicaid: Eligibility and Vision Benefits. They are known to be cheaper compared to high-grade lens materials. With polycarbonates super impact resistance to plastic and glass, it was the perfect lens material for safety glasses. Polycarbonate vs. Trivex lenses: A quick comparison. Since the refractive index is only 1.49, these types of lenses get very thick, if you need a strong correction. Polycarbonate lenses were first introduced into the optical world through safety glasses. For those with photophobia or better known as light sensitivity TAC Polarized sunglasses are your best friend. For a better experience, please enable JavaScript in your browser before proceeding. Heres a quick overview of the differences. Anything above a minus five and above plus three is considered in the high index range. | An In-Depth Guide, What is the Best Plastic Glue? Just to add that polycarbonate is plastic. Optics - central. While quality eye care is important, the price can be a critical factor in your decision-making process. Venti20 Sunglasses - Lens Specifications and Glossary. Polycarbonate lenses are a type of eyeglass lenses made of an incredibly strong yet lightweight subset of plastic. Many people get confused about the differences. Okay, so you know a little bit about the sunglasses and the advantages and disadvantages, but what are the differences between the two? Impact resistance sets them apart from other eyeglass lenses. Hi Amy! This is where polarized lenses come in handy because they have a filter specially made to block this glare. All About Vision does not provide medical advice, diagnosis or treatment. Theyre designed to withstand impact, correct vision issues and support more active lifestyles. Here are some of our favourites! Learns and shares consistently about plastics technologies. choosing a selection results in a full page refresh. Bottomline Benefits: Polycarbonate Vs High Index Lenses . This plastic tends to reflect a lot of light, leading to glare. Today, even though glass lenses are thinner than they used to be, polycarbonate lenses are still the lighter choice. Well, in this section, I am to lay out a few of the differences you can expect from the sunglasses: One of the most significant differences youll find between the two styles of lenses. Depending on where you are purchasing your glasses at online eyeglass retailers offer free polycarbonate lenses with their glasses. Polycarbonate lenses are ideal for sports. Trivex lenses have less internal stress and may produce sharper central vision than polycarbonate lenses. Polycarbonate lenses are more expensive than plastic glasses. Therefore, it is compatible with almost all mainstream add-on options. Polycarbonate vs. Trivex lenses: A quick comparison. Does it really hurt your eyes? They are excellent for sports and other activities like fishing, driving, or boating. Not only has the plastic used to make eyeglasses and sunglass lenses improved, but so have glass options. The cost and quality of polycarbonate lenses will vary depending on your prescription (stronger prescriptions may cost more) and the seller, so its worth shopping around. 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. Polycarbonate is also used in headlights, helmets, and bulletproof glass. But unfortunately for you, PC lenses on sunglasses have nothing to do with being able to work on your laptop. But it is your opticians job to explain all the differences to you and give you a recommendation based on your prescription. The best TAC Polarized Lens are those that block more than 99% of harmful UV rays with wavelengths up to 400 nanometers. Even if he or she does not participate in organized Polycarbonate lenses, because they have a higher index, are slimmer than Trivex. All rights reserved. Men Sunglasses You can wear polycarbonate lenses with virtually any full-rim style. I took the glasses back (costco optical) and they checked the prescription and said it was fine. These lenses guard your eyes against UVA and UVB sun rays. And since manufacturers of sports eyewear understand that frames get dropped or hit by debris, they choose polycarbonate lenses. Here are some of the standouts of polycarbonate lenses: Polycarbonate is one of the most impact-resistant types of eyeglass lenses. Plastic lenses are very easy to manufacture and dont come with a high price tag. 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. Customizable lenses for your vision needs. Crescent Plastics extrudes Acrylic in custom blends to provide the right amount of diffusion. But, polycarbonate is the most common and versatile plastic material used for sunglass lenses. scratch-resistant coating to prevent surface scratches. Thats because Polycarbonate flexes instead of shattering when hit by an object, whether its gravel, a ball, or an elbow. Lower priced polarised sunglasses use a multi-layer material called TAC (Triacetate) with the front layer being the polarised film. The fourth and fifth are UV absorbing layers that absorb over 99% ultraviolet rays. Polycarbonate lens didnt truly gain traction among the optical industry until more recently due to various problems with the material clarity and manufacturing. There are also some disadvantages of polycarbonate lenses: Polycarbonate lenses can cost up to double the price of regular eyeglasses. 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. Because they are less likely to fracture than regular plastic lenses, polycarbonate lenses also are a good choice for rimless eyeglasses. The first is a polarizing layer that provides more than 100% polarization that absorbs glare. So lets dive in and take a look at what the differences are between these two very similar but different materials. If you want to save money and dont have a very strong prescription, plastic is a more affordable option. 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. sports, choosing impact-resistant eyeglass lenses and frames is an don't provide the type of eye protection needed for sports. Trivex lenses nearly as hard as glass. Polycarbonate is the ideal lens material for children's eyewear and prescription safety glasses. Polycarbonate lenses were first invented in 1953, but strangely two scientists developed them one week apart despite being on opposing sides of the world. 1.67 index lenses are ideal for prescriptions under +5.00/-8.00 and astigmatism correction between -3.00 and -4.00. And thats why when exact precision is needed, say in microscopes, cameras, or telescopes, glass is still the standard. Polycarbonate lenses are thinner and lighter than regular plastic lenses. Glass lenses used to be really heavy. With your prescription, you have the right to shop wherever you prefer from an optician, in stores, or online. 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. Polycarbonate lenses are a relatively new lens technology. But that doesnt mean polycarbonate or plastic lenses are not clear. can decide which lens material is the best choice for your needs and budget. This flexibility also means polycarbonate and Trivex lenses need a All Rights Reserved, Sunglasses for babies with polycarbonate lenses, Effects of Blue Light on Eyes New Study Reveals How it Damages Your Eyes, Zenni Glasses Review 2022 The Most Affordable Glasses Online, Lightweight 20% lighter than plastic, substantially lighter than glass, The material is soft and requires a scratch-resistant coating, Distortion on lens edge for higher prescriptions, Is more reflective than plastic or glass (. Like & follow our social media pages to see more updates and promotions! Additionally, plastic lenses are much less expensive than the other options. SEE ALSO: How To Clean Glasses Without Scratching Your Lenses! In general, high-index lenses are prescribed for strong prescriptions. 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. Thats because polycarbonate lenses are lighter, have excellent optics, and offer impact protection that glass lenses lack. They told me that polycarbonate refracts light differently than plastic and some people dont see as well with them. However, many people do not notice this. Just browsing. Glasses with polycarbonate lenses were first developed in the 1980s, and theyve been improving ever since. Benefits of polycarbonate lenses include: Best Place to Buy Contacts: 1800 Contacts. Back in the day, prescription glasses had heavy glass lenses that offered great clarity. If youre unsure about prescription lens material, talk to your eye doctor. Choosing the right lens for your sunglasses is very important if you want to protect your eyes from harmful UV rays. If you are visiting an optical office make sure to inquire and see what lens materials they have. Polycarbonate's impact resistance is so good that it's used for lenses in both safety and sporting eyeglasses. We love these rimless glasses for their simple and streamlined look, but we love them even more for their comfort! Women Sunglasses Some people complain that they cannot see through the lens very easily, but this is only a tiny percentage of the world's population. Hi Diane, great question. High index lenses are denser than polycarbonate lenses, meaning they have thinner lenses to reflect light properly. 1.0 out of 5 stars 1 rating. Having a conversation with your optician about your eyewear needs and shopping around for the best price is wise. The rigid thermoplastic is often considered 200 times stronger than glass and is thus utilized to make bulletproof windows and car shields. Some are known to go up to 9 layers, but theres no confirmation whether having nine layers is better than seven. 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. Cost. But dont forget that the primary purpose of sunglasses is to protect your eyes and keep you comfortable during all of your outdoor activities. Ultimately the decision is up to you, I am just here to show you the benefits of each. 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. We think all the time! The liquid polycarbonate is then rapidly injected into lens molds, compressed under high pressure, and cooled to form a finished lens product in a matter of minutes. Is what theyve told me true? In other words, PC stands for polycarbonate. 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. Page published on Wednesday, February 27, 2019. Helpful even for people with two different prescriptions for lenses. 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. 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. High index lens density doesnt allow it to be tinted to more than anything more than a light shadow. However, I know that choosing a lens material can be a real pain in the head. Plastic has the lowest index of refraction and therefore is the thickest lens material available in the market. Polycarbonate is an excellent choice for people with a strong prescription. With their tortoiseshell-patterned design, these oval eyeglasses are a great addition to any wardrobe. Let me know below! Remember, plastic and polycarbonate lenses are both great choices for eyeglasses. It's highly impact-resistant and famous for standing up to forces that would shatter other materials. She earned her certification from Association of British Dispensing Opticians (ABDO). They're siblings, not twins, in other words. Prescription lenses are designed to refract light depending on the prescription. 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. Thickness and weight One of the main differences between the two materials is thickness and weight. About Me | Meet Our Team | Privacy Policy | Contact Us | Sitemap The great news is that polycarbonate lenses can be fitted into virtually any style of frames! 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). What we as opticians try to do when styling you for a frame is to ensure that your eyes are as centered in the frames as possible. If you are looking for high index lenses (1.74), you have to pay between $180 and $230. Without a doubt, polycarbonate is the most rigid lens material. 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