polycarbonate lenses vs high index

Polycarbonate is by far the safest lens available. Avoids the ‘bug eye’ look that can occur with farsighted prescriptions. Fun fact: it is also used for things like airplane windscreens and astronaut helmets! When light enters the front surface of the lens and exits the back, its path is adjusted by the curves of the lens. Polycarbonate is used in 35% of all prescription glasses. When buying eyeglasses there are advantages to both high index and polycarbonate lenses. A high-index eyeglass lens allows people with a stronger prescription to wear a lens that is lightweight and thin. Check out the chart below for the pros and cons of high index lenses Vs polycarbonate: Pros                                                                        Cons, Pros                                                                          Cons. Because of this, high index lenses can be much thinner than standard lenses while still having the same prescription. Polycarbonate lenses are made from a type of plastic that is famous for its durability. Can be more breakable than standard lenses. Backup Glasses: Stay Ready with Ultra-Affordable Options. Hi-Index Lenses . Another important property is that polycarbonate naturally blocks 100% UV light. Due to its popularity, when a new version of a lens add-on is released, it tends to be available with polycarbonate first. Because of their durability, polycarbonate lenses are much less likely to break or fracture than even high index lenses. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. If you’re looking to tint your lenses to a dark shade, you can’t do so with high-index lenses. High-index lenses can also be used to improve the fit of lenses in the frame. Another example: both polycarbonate and high-index are available with polarized filters, but high-index may be limited to 2 colors whereas polycarbonate may offer 5. The higher the refractive index (how effectively the lens bend the light), the lighter the lenses. Recommended for anyone with a strong prescription (+/-4.0 or higher total power), 1.67 high-index lenses are up to 20% thinner than polycarbonate lenses. High-index plastic lenses can greatly improve the eyeglasses you build. Super thin 1.6: Standard RX. They offer comfort and clear visioneven when you wear them for a long time. The frames you select are what everyone will notice, but of course the lenses are responsible for correcting your vision. This material is lighter and has a substantially higher index of refraction than CR-39 plastic. Yeah, the latest polycarbonate lenses are really thinner than high index plastic lenses like 1.67 index lenses. Unlike Trivex, polycarbonate lenses are not made in the same way as traditional eyeglasses. Saturday-Sunday 9 a.m. - 6 p.m. EST, HomeBlogHigh Index Lenses Vs Polycarbonate, Reviewed by: Dr. Matthew Miller, OD on September 27th, 2020. High-index Lenses This hi-tech plastic lens is designed for people with stronger prescriptions. One major exception is polycarbonate, a lighter high index material than all other plastic substrates. Polycarbonate comes with a coating which allows it to be tinted significantly darker than high-index. Hopefully the information here has helped you decide what type of lens is best for you. Polycarbonate lenses have an index of refraction of 1.59, and will generally be about 20% thinner than standard plastic lenses. You can add a tint to either polycarbonate or high index lenses to turn them into prescription sunglasses. Probably not. However, you should understand your choice will affect durability, visual clarity, and more. It’s up to 10X more impact-resistant than high-index lenses and is therefore the ideal lens material for sports protective eyewear and children’s glasses. These lenses are  super-thin but are also more expensive than the polycarbonate option. Scratch Resistance of Glass and Plastic Lenses. Polycarbonate lenses are perfect for you. Monday-Friday 9 a.m. - 12 a.m. EST High index plastic lenses can be treated with scratch-resistant coating. Can You Use Vision Benefits to Purchase Eyewear Online? Generally speaking, high-index is best suited for higher (more severe) prescriptions. Additionally, they are lighter than both of those lenses despite only having a marginally larger index than polycarbonate. Standard polycarbonate lenses can range in price from $9 to $205, depending on your prescription and what add-ons you choose, including whether you need standard, bifocals, or progressives. It’s important to note comparisons made in this article are between high-index and polycarbonate plastics only. High-index lenses measure slightly better than polycarbonate. Essilor’s polycarbonate lenses are 20% thinner, 30% lighter, and 12x more impact resistant than standard plastic lenses. Polycarbonate lenses are compatible with almost all popular lens add-on options. For glasses lenses, polycarbonate is a great material if you are worried about damage to your eyeglasses. It’s ideal for stronger prescriptions with SPH that range around +3.00, – 3.00 to +6.00, – 6.00 and above. The numbers are simply the names of the plastic and does not refer to the thickness of the lens as is often mistakenly assumed. Plastic lenses can accept tint colors for the people that like a light tint on their lenses. LEARN MORE: THE ESSENTIAL GUIDE TO PRESCRIPTION LENSES. Probably not. If your prescription isn’t quite as extreme (not in the range presented above), polycarbonate is a great choice. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Polycarbonate makes sense as an outdoor eyewear material. Most people can’t perceive the color distortion at these levels. These filter out harmful blue light from digital screens which can cause eye strain. Lens materials: Polycarbonate and 1.67 high index are different types of plastics used to make lenses for glasses. Suitable for prescriptions of SPH (-8 to +4) and CYL (+/- 2). Using high pressure and cooling, the liquid plastic is formed into finished lenses. We offer a few different indexes on our lenses. This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. It’s lightweight, strong and the lenses generally cost less. You’re bound to be offered multiple options for lens materials, most commonly, high index and polycarbonate. Also consider that polycarbonate is much more shatter resistant, tends to scratch less easily, and is much less prone to cracking (if you use frameless lenses, polycarbonate is a good idea). Polycarbonate Abbe value = 30; High-index Abbe value = 36; Basic plastic (CR-39) Abbe value = 58; Crown glass Abbe value = 59; Should you worry about Abbe value? "polycarbonate vs plastic lenses best for high myope?" With polycarbonate and CR-39 lenses, an aspheric design usually is an option that increases the cost of the … High-index materials are denser than lower-index polycarbonate, which means they result in thinner lenses in order to refract light accurately. Thinner. Refractive index refers to the rate at which light bends as it passes through the plastic of the lens. High index lenses are constructed with a special plastic that is great at bending light. The higher the number, the thinner the lens. It’s for nearsighted (-) single-vision prescriptions only. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. If you’re like most, you probably put a lot more thought into selecting your frames than your lens material. Aspheric lenses can be made in many lens materials. So, whichever of our amazing frames you decide on, you know you’re getting a great deal! By visiting our website, you agree to our Privacy Policy. See our latest collections & exclusive offers before the crowd! When compared to other lens materials, high-index nor polycarbonate are known to provide the ultimate in optical clarity. Aspheric is a type of lens design. If you have the high prescription in the eyes, you'd better choose the 1.67 index polycarbonate lenses which will not let you look nerd. Before making a decision like this, it’s important to understand all the pros and cons of high index lenses Vs polycarbonate. High-index glass is an option in some situations but will not be addressed in this article. It’s super, almost 20% thinner than 1.5 index. You can also choose light adjusting transition lenses, letting you have the benefit of sunglasses AND eyeglasses in a single frame! At EyeBuyDirect, we offer tons of options for your lenses. 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. Answered by Dr. Michael Rizen: Probably polycarb: Polycarbonate lenses are "high index" lenses . Most of us use digital screens a lot, making this a great choice to protect our eye health. Polycarbonate lens material is best for impact resistance and cost reduction, as the material is affordable and extremely impact resistant. Polycarbonate may not be the wrong choice, but your lenses will be thicker. This material is useful if you live an active lifestyle. The highest index single-vision lens we offer is the 1.74 high-index polymer lens. High index lenses are made of a plastic material which bends light more than standard CR39 lenses and can therefore be made thinner and lighter allowing for more cosmetically appealing and comfortable to wear glasses.. These lightweight lenses also offer 100% UV (ultraviolet). Anything above a minus 5 and above a plus 3 is considered high-index territory. The lower the index, the more material is needed to accurately refract light. Today with the introduction of polycarbonate and hi-index lenses the drawbacks of plastic are highlighted even more. This material is highly recommended for people in jobs that are high risk for eye injury and for anyone under the age of 18. The lenses are a high-index plastic material. Instagram @thiccpersephone Style #2018623 1.67 High Index Lense Sunglasses Clip-On in Amber The higher the number, the thinner and lighter the lens. Hi-index lenses are made of a special plastic material that refracts light in a different way than regular plastic lenses. Low ‘abbe value’, which can cause distortions when looking at lights. We offer a few different indexes on our lenses. The real winners are materials such as Trivex, CR-39 and Crown Glass. There are several coatings that make plastic lenses more durable. Polycarbonate lenses also provide you with protection from 100% of the harmful UV rays from the sun. High-index plastic Benefits: Lighter, thinner and scratch-resistant. Copyright 2020 EZContacts.com. Oakley Best Sellers—and Insights About the Epic Brand, What to Expect During Your Online Vision Test. Glasses tend to get quite thick at high correction, especially some low index (1.50) lenses. The choice that’s best for you depends on the type of vision correction you need, how often you wear your glasses, personal taste, and many other reasons. Whether you decide to choose minimalist high index or tough polycarbonate lenses, all of the lenses we offer at EyeBuyDirect come with anti-scratch, anti-reflective, and UV protective coatings. Prescription lenses are designed to refract light according to your prescription. Let’s be friends! High-index lenses measure slightly better than polycarbonate. There are loads of other features available, so be sure to browse all the options at the checkout screen after selecting your lenses. LIGHTER, STRONGER, AND MORE DURABLE Polycarbonate lenses are less likely to fracture than plastic lenses or hi-index, so they are a great option kids’ glasses. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. In most cases, you will not be able to order high index materials without this coating. Transitions Signature Gen 8: What’s New in Photochromic Lenses? Should you worry about Abbe value? These lenses contain a high index of 1.6. Thin lens glasses are very appealing to a lot of wearers because they generally appear more natural in thinner eyeglasses frames – the sides of the lenses are less visible. Just like the 1.53 mid-index Trivex and 1.59 polycarbonate lenses, the 1.74 lens cannot be tinted. This material of lenses will provide the perfect eyeglasses for you. With prescriptions of this power, the reduced thickness with high-index will make-up for the increased weight. The higher the refractive index, the thinner the glass. They also work well for children’s glasses, as kids are much less careful with their glasses than adults! Polycarbonate is the standard choice for almost all eyewear that requires shatter and/or chip resistance. They can sharpen your sight even further if you apply an anti-glare coati… According to Refractive Source, CR-39 plastic lenses have a refractive index of 1.498, while any high index lenses have a reflective index of 1.523 or higher 1. Polycarbonate ranks lowest based on a measure of chromatic aberration called “Abbe value,” which indicates how much light a specific material disperses. Progressive lenses … Still a popular option today, polycarbonate lenses are tough, lightweight, and an ideal option for children’s eyewear. High Index vs. Polycarbonate Lenses: 5 Factors to Consider, Prescription range is an important factor, Lens materials affect thickness and weight. High index lens material is best for getting thin, lightweight lenses that reduce eye distortion and allow for an attractively thin profile to the lenses. Questions? Fitting Eyeglasses: A Guide to the Numbers on... 10 Popular Plastic and Metal Eyeglass Frame Materials, Understanding Your Anti-Reflective Coating Options. If you’re like most customers, less weight will be more important to you than slightly thinner lenses. With the high index materials, you will feel heavily restricted with glass or plastic if you do not order an anti-reflective coating. Polycarbonate eyeglass lenses are a type of high-index lens that are also scratch and impact resistant and protect your eyes from UV. Most high index plastic lenses are made with aspheric designs to optimize both the appearance and the optical performance of the lenses. Polycarbonate is used in 35% of all prescription glasses. Trivex is an improvement over Polycarbonate. The lower numbers are classified as mid-index lenses. Information about Polycarbonate Lenses: Polycarbonate High Index Lenses are a totally separate material from other plastics. So we’ll examine the two most common lens materials here and present the advantages and disadvantages you should be aware of. On the other hand, its optical quality is inferior to CR-39. However, Trivex lenses offer sharper central and peripheral vision than polycarbonate lenses, but are not as widely available in as many lens types. 1-855-393-2891 High-index vs. polycarbonate: which is clearer? These lenses are super-thin but are also more expensive than the polycarbonate option. The material is a thermoplastic and begins its life as small, solid pellets. Oliver is the founder of Eye Influence. For example, if a polycarbonate lens requires 2 millimeters of material to refract light, high-index may only need 1 millimeter. With all things equal, polycarbonate is up to 18% lighter than high-index. 1.6 High-index Lens – Super-thin Lenses. Advantages of High-Index Lenses . Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. This one’s not a close call. Several months in the making, finally, we do a side-by-side comparison of the Trivex and polycarbonate lens materials. These tints are available in a variety of colors including, brown, gray, yellow, red, blue, rose, green, and more. Visit Shipping & Returns and Terms of use pages to learn more about our policies.

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