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Several months in the making, finally, we do a side-by-side comparison of the Trivex and polycarbonate lens materials. While they’re not the thinnest kind of lens out there, they still retain their position as the swiss-army-knife of eyewear lenses. You can usually find some single vision lenses for around $30 and some bifocals for $50. And consult the optician if they are polycarbonate lenses. 7 Ways to Tell if Your Glasses Lenses are Made of Plastic or Glass. Acrylic plastic is less expensive and can be heated and molded, but is vulnerable to cracks. Polycarbonate lenses are thinner and lighter than regular plastic lenses. There is a very small percentage of the population that is unable to wear polycarbonate lenses. Let’s look at the pros and cons of polycarbonate lenses. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Is what they’ve told me true? Dr. Michael Rizen answered. Impact Resistance lenses are 10 times more stronger and 50% lighter and 45% thinner compare to regular plastic glasses. However, we normally recommend polycarbonate over mid index due to their close relative thinness. When it comes to the world of prescription glasses and prescription sports goggles, the most important feature is the lenses. It’s worth giving polycarbonate a glance if it’s time to upgrade your lenses. Anti-reflective coating works better and is easier to apply to plastic lenses than glass ones. It’s common for people who wear glasses to simply get stuck in a loop of upgrading to the same exact lens type and style of frames every time they need to update their prescriptions. For glasses lenses, polycarbonate is a great material if you are worried about damage to your eyeglasses. Plastic has the lowest index of refraction and therefore is the thickest lens material available in the market. You’re absolutely right! How to repair scratches on a plastic eyeglass lens. You will find opticians out there that swear by plastic using the fact that plastic is really inexpensive, but in my experience, I have done my fair share of accidentally shattering, scratching, or chipping plastic lenses that I don’t want to have anything to do with them anymore. Thank you for reaching out. This is the sales pitch, and it’s also true – though with a definite caveat (more on that in a moment). Bear in mind that some of the links on this website are affiliate links. The polycarbonate lens is an upgraded option. Polycarbonate lenses, which the optic shop likes to upgrade you to, is up to 10x more impact resistant than a basic plastic lens. Plastic Lenses. 01/27/2015. Polycarbonate lenses were first introduced into the optical world through safety glasses. These lenses have the highest impact resistance of all lenses therefore, making them great for kids. 0. With polycarbonate’s super impact resistance to plastic and glass, it was the perfect lens material for … Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. However, it is worth noting that this material is not completely break proof. Polycarbonate glasses create more distortion than plastic lenses and often cause problems for those prone to distorted vision. Besides, the polycarbonate lenses have UV protection themselves. Polycarbonate plastic is strong and works well for high-contact activity. Whenever you go purchase glasses you are always given a variety of different choices when it comes to lens materials. Obviously, I am clearly talking about CR-39 vs polycarbonate. Meet CR-39. The polycarbonate lens was actually first introduced in the 1970s for use in safety glasses. The photochromic dyes are sandwiched between multiple coatings of PU on the surface of polycarbonate and thiourea material. Facebook Twitter Google+ Email. The reason is because poly carbonate have high impact resistance. This is the difference between perspex and polycarbonate. This is often a difficult decision to make if you don’t know what the benefits are between the different lens materials. PLASTIC VEINS. Polycarbonate lenses are made of a type of plastic that is more impact-resistant than standard plastic lenses. Ask a Plastics Expert. Polycarbonate does have a lower Abbe value so there are more chromatic aberrations, this can be reduced by adding a quality anti-reflective coating to the lenses. Is one really better than the other? Very informative. A plethora of choices are usually presented, and it can be hard to know what’s right for you. 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. Posted by Goggles N More on 12th Jun 2020. Further, plastic glasses scratch less frequently. TMEN. Plastic is a polymer that has a large molecular mass. So let’s dive in and take a look at what the differences are between these two very similar but different materials. Today polycarbonate is slowly eating up plastic lenses share of the optical market due to it being a thinner, lighter-weight, more impact resistant, and more scratch-resistant lenses. Polycarbonate lenses offer 100 percent protection from UV light and radiation. See how Cr-39 Plastic holds up next to Polycarbonate with impact. The key difference between polycarbonate and plastic is that polycarbonates are lighter but much stronger than plastic. Ordinary plastic lenses offer minimal protection from UV radiation. It depends on your habits use for the spectacle. June 15, 2020 June 15, 2020 8 min read Muskan. When eye safety is a concern, polycarbonate or Trivex lenses usually are the best choice for your eyeglasses, sunglasses and sports eyewear.. The plastic material itself is very vulnerable to scratches and hard scratch-resistant coatings have been developed as a solution to this problem. After all, this is what people are going to be looking through. Refractive index refers to the rate at which light bends as it passes through the plastic of the lens. Plastic lenses look the optical industry by storm when they were introduced. Necessary cookies are absolutely essential for the website to function properly. I have been wearing polycarbonate lenses for years for a high prescription. Polycarbonate lenses are made from a type of plastic that is famous for its durability. Today with the introduction of polycarbonate and hi-index lenses the drawbacks of plastic are highlighted even more. Polycarbonate vs plastic eyeglass lenses. The benefits don’t stop there though with polycarbonate being thinner, more lightweight and more resistant to scratches as well. I’ve never purchased glasses from Walmart before, so I don’t have any experience with them. Polycarbonate Lenses . But I can tell you I have seen more polycarbonate lenses with damaged coatings from water than CR-39 lenses. The other thing is, they are legally required for anybody under the age of 18. Never! They also offer 100 percent protection from the sun’s harmful UV light and are up to 10 times more impact-resistant than plastic or glass lenses. Whenever the constructors or any type of furnishing industry look for a translucent plastic, they often choose between the polycarbonate and the Plexiglass sheet. Polycarbonate is the worst performing commonly used plastic, having the lowest value of 30. Other people are only worried about what the frames look like and could care less about the lenses. Thankfully, polycarbonate and nearly all high-index plastic lenses have 100 … I notice you say that plastic is cheaper. They are more than 10-times more impact resistant than your average plastic or glass lens. Polycarbonate is sometimes called Lexan (trademarked name by GE Plastics) or Makrolon. Polycarbonate will be uv400. 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. Trivex is the preferred alternative to polycarbonate when the lightness of your lens is paramount. Glass lenses are much heavier than plastic lenses, which can be annoying for several reasons. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Essilor’s polycarbonate lenses are 20% thinner, 30% lighter, and 12x more impact resistant than standard plastic lenses. And Then Came Poly Polycarbonate is still lighter, and can be made in higher index – meaning that a strong prescription lens can still be quite thin. The same attribute that allows high-index to be thinner, makes it heavier. 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. Distinct Advantages of Acrylic vs Polycarbonate Plastic Lighting Fixture Lenses The use of acrylic or polycarbonate material for your lighting extrusion applications will depend on the features that you would like to incorporate into the application’s overall functionality. Print. Polycarbonate lenses set the standard in vision correction. The two major differences between glass and plastic are weight and scratch resistance. RELATED: How to clean your glasses the right way. I recently purchased non-polycarbonate 1.61 index “Digital Free Form” progressive lenses from zennioptical.com. And polycarbonate lenses are 10 times impact-resistant than common plastic lenses. PC is a transparent thermoplastic that can be found commercially and is available in … But today polycarbonate lenses are gaining more control of the optical market and is a very popular choice of lenses. They do have more chromatic aberration though. Thus, the lenses are often used in safety goggles, sports glasses and children's eyewear. Polycarbonate is stronger and more flexible but sensitive to scratches. They are often used in high myopes to allow for the glasses to be thinner and lighter. For those 2 you probably can't tell. These people whenever they wear polycarbonate lenses experience a weird distortion that isn’t easy to explain. 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. In a typical plastic or metal frame, thickness can be reduced by up to 20% by using high-index vs. polycarbonate lenses. Polycarbonate lenses are ultra-durable, ultra-lightweight lenses. Glass lenses are clearer than polycarbonate plastic and will provide you with the crispest visual experience. polycarbonate vs plastic lenses best for high myope? Depending on where you are purchasing your glasses at online eyeglass retailers offer free polycarbonate lenses with their glasses. Hi Huy, Polycarbonate lenses, which the optic shop likes to upgrade you to, is up to 10x more impact resistant than a basic plastic lens. Plastic photochromic lenses rely on organic photochromic molecules to achieve the reversible darkening effect. Polycarbonate lenses also protect the eye from UV light. I have bought many pairs of glasses and the lense material never crossed my mind. As a general approximation, material index vs. Abbe value has the following inverse relationship as shown on this Zeiss supplied plot. It is moldable, strong, and lightweight, which makes it resistant to shatter. This is the sales pitch, and it’s also true – though with a definite caveat (more on that in a moment).If you are going to mountain bike race, or practice karate chops on live opponents (which is probably a case for contact lenses anyway), polycarbonate makes sense.But 10x more impact resistant is a bit misleading.A CR-39 lens is quite impact resistant. I’m thinking about getting a second pair of glasses (not googles) for water activities like sitting by a shallow pool, or walking around at a water park, so the glasses won’t be submerged as such, but I expect then to get lots of pool water splashes (both salt water and chlorinated water). As a general rule of thumb, glass lenses will cost you more than plastic ones. It is because both of them are transparent plastic and are used a lot by the people. Anti-Reflective Coating. They also provide great optical clarity. I have just started to need glasses for reading. polycarbonate lenses. 1 doctor agrees. Thanks for stopping by! The reason these lenses darken in sunlight but not indoors under artificial light, is that room light does not contain the UV (short wavelength light) found in sunlight. Even when we talk about Polycarbonate or derivatives thereof from different manufacturers. The top and bottom edges of both lens have many, very fine scratches. A plethora of choices are usually presented, and it can be hard to know what’s right for you. But people often tend to get confused between both of them. Often, optometrists recommend polycarbonate lenses when safety is an issue. Dr. Michael Rizen answered. Probably polycarb: Polycarbonate lenses are "high index" lenses . Technical Assistance. Learn more about how to choose between polycarbonate vs. acrylic. The most wearers of glasses use plastic lenses due to impact resistance and less weight. So if you are buying for your child or are somebody under the age of 18 and buying some glasses for yourself, polycarbonate is required by law. With ordinary plastic lenses, a strong prescription can result in a thicker lens. I’ve had glasses that were used as long as 4 years, and never had such a problem. Typically, the stronger the prescription of the lens, the thicker and heavier the glasses. This website uses cookies to improve your experience while you navigate through the website. polycarbonate lens vs plastic lens. 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. The higher the refractive index, the thinner the glass. This provides Trivex lenses the benefit of crisper optics than injection-molded polycarbonate lenses, according to PPG. They provide extra safety for your eyes without sacrificing comfort or fit. 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. This lightweight material has excellent optics and and is best suited for mild or minimal prescriptions. Now I will be adding lense material to the list. Sunglasses for babies with polycarbonate lenses, Effects of Blue Light on Eyes – New Study Reveals How it Damages Your Eyes, Zenni Glasses Review 2020 – 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 (. Hi Tim! However, thinner lenses won’t necessarily mean they will weigh less. Both polycarbonate and Trivex lenses are thinner and lighter than regular plastic lenses. Poly-carbonate is shatter resistant and can also prevent some surface scratches. When it comes to the world of prescription glasses and prescription sports goggles, the most important feature is the lenses. If you’re interested in trying out this material for your lenses, select 1.59 index lenses for your frames at checkout. Lastly, plastic lenses don’t come with built-in UV protection, therefore it is important that UV protection is added to these lenses to protect your eyes from the harmful UV rays. Now I will send you an email to help you with this shatter resistant and can prevent... That help us analyze and understand how you use this website are affiliate links, this is why we all! Thinness but typically lack the optical world through safety glasses, telescopes, and never set them down on! Prescription eyeglasses typically use lenses made of a type of plastic that is impact-resistant. 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