The lower numbers are classified as mid-index lenses. They also work well for children’s glasses, as kids are much less careful with their glasses than adults! Because of their durability, polycarbonate lenses are much less likely to break or fracture than even high index lenses. Progressive lenses … When compared to other lens materials, high-index nor polycarbonate are known to provide the ultimate in optical clarity. Oliver is the founder of Eye Influence. The real winners are materials such as Trivex, CR-39 and Crown Glass. Transitions Signature Gen 8: What’s New in Photochromic Lenses? Copyright 2020 EZContacts.com. Scratch Resistance of Glass and Plastic Lenses. I generally recommended people with prescriptions anywhere between +/-0.50 to +/-4.00 to go with polycarbonate lenses. The higher the refractive index, the thinner the glass. High Index vs. Polycarbonate Lenses: 5 Factors to Consider, Prescription range is an important factor, Lens materials affect thickness and weight. 1.6 High-index Lens – Super-thin Lenses. Advantages of High-Index Lenses . Polycarbonate lens material is best for impact resistance and cost reduction, as the material is affordable and extremely impact resistant. Polycarbonate ranks lowest based on a measure of chromatic aberration called “Abbe value,” which indicates how much light a specific material disperses. For example, if a polycarbonate lens requires 2 millimeters of material to refract light, high-index may only need 1 millimeter. In a typical plastic or metal frame, thickness can be reduced by up to 20% by using high-index vs. polycarbonate lenses. If you’re looking to tint your lenses to a dark shade, you can’t do so with high-index lenses. Additionally, they are lighter than both of those lenses despite only having a marginally larger index than polycarbonate. High-index lenses measure slightly better than polycarbonate. Refractive index refers to the rate at which light bends as it passes through the plastic of the lens. 1-855-393-2891 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. High-index materials are denser than lower-index polycarbonate, which means they result in thinner lenses in order to refract light accurately. This one’s not a close call. High-index plastic lenses can greatly improve the eyeglasses you build. A high-index eyeglass lens allows people with a stronger prescription to wear a lens that is lightweight and thin. These lenses contain a high index of 1.6. Before making a decision like this, it’s important to understand all the pros and cons of high index lenses Vs polycarbonate. While you mull those things over, why not browse our huge selection of frames to go with your lens choice while you’re at it? Due to its popularity, when a new version of a lens add-on is released, it tends to be available with polycarbonate first. LEARN MORE: THE ESSENTIAL GUIDE TO PRESCRIPTION LENSES. Polycarbonate is used in 35% of all prescription glasses. High “abbe value” meaning less light scattering. With all things equal, polycarbonate is up to 18% lighter than high-index. Oliver is an ABO Certified Optician and has been working in the eye care industry for over 15 years. Plastics are graded in numbers, such as 1.50 or 1.67. As a rule of thumb, if you have a strong prescription, high-index is the way to go. Aspheric is a type of lens design. Polycarbonate is by far the safest lens available. The material is a thermoplastic and begins its life as small, solid pellets. Instagram @thiccpersephone Style #2018623 1.67 High Index Lense Sunglasses Clip-On in Amber High index lenses have a refractive index (ability to bend light) of 1.60 or higher… Yeah, the latest polycarbonate lenses are really thinner than high index plastic lenses like 1.67 index lenses. Several months in the making, finally, we do a side-by-side comparison of the Trivex and polycarbonate lens materials. Oakley Best Sellers—and Insights About the Epic Brand, What to Expect During Your Online Vision Test. Using a high-index lens material—one with an index of refraction ranging from 1.60 to 1.74—can reduce lens thickness and weight, making eyeglasses comfortable and cosmetically appealing. You can add a tint to either polycarbonate or high index lenses to turn them into prescription sunglasses. Essilor’s polycarbonate lenses are 20% thinner, 30% lighter, and 12x more impact resistant than standard plastic lenses. Still a popular option today, polycarbonate lenses are tough, lightweight, and an ideal option for children’s eyewear. With hi-index lenses, vision can be corrected with less material, making the lens much thinner. At EyeBuyDirect, we offer tons of options for your lenses. Today with the introduction of polycarbonate and hi-index lenses the drawbacks of plastic are highlighted even more. Answered by Dr. Michael Rizen: Probably polycarb: Polycarbonate lenses are "high index" lenses . This means the lenses are thinner and lighter. We offer a few different indexes on our lenses. When light enters the front surface of the lens and exits the back, its path is adjusted by the curves of the lens. It’s important to note comparisons made in this article are between high-index and polycarbonate plastics only. Most opticians would agree a prescription over a minus 7 or a plus 5 should always be made with high-index lens materials. High-index plastic Benefits: Lighter, thinner and scratch-resistant. High-index Lenses This hi-tech plastic lens is designed for people with stronger prescriptions. 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. Plastic lenses can accept tint colors for the people that like a light tint on their lenses. Labs report that many orders for high index lenses are for weak corrections (less than one diopter), even though it is difficult to detect any visible thinning of the lens edges in those cases. Super thin 1.6: Standard RX. All Rights Reserved. The higher the number, the thinner the lens. To optimize your experience we use cookies. Saturday-Sunday 9 a.m. - 6 p.m. EST, HomeBlogHigh Index Lenses Vs Polycarbonate, Reviewed by: Dr. Matthew Miller, OD on September 27th, 2020. By visiting our website, you agree to our Privacy Policy. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. This material is lighter and has a substantially higher index of refraction than CR-39 plastic. Generally speaking, high-index is best suited for higher (more severe) prescriptions. When buying eyeglasses there are advantages to both high index and polycarbonate lenses. Trivex is an improvement over Polycarbonate. Unlike Trivex, polycarbonate lenses are not made in the same way as traditional eyeglasses. Because of this, high index lenses can be much thinner than standard lenses while still having the same prescription. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Polycarbonate lenses have an index of refraction of 1.59, and will generally be about 20% thinner than standard plastic lenses. They offer comfort and clear visioneven when you wear them for a long time. These filter out harmful blue light from digital screens which can cause eye strain. 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. This material is highly recommended for people in jobs that are high risk for eye injury and for anyone under the age of 18. Subscribe to our newsletter. Can You Use Vision Benefits to Purchase Eyewear Online? His books, videos and articles touch on various subjects, such as eye care, good tech habits, motivation and leadership. Not high index. With polycarbonate and CR-39 lenses, an aspheric design usually is an option that increases the cost of the … It’s ideal for stronger prescriptions with SPH that range around +3.00, – 3.00 to +6.00, – 6.00 and above. 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. There are several coatings that make plastic lenses more durable. Prescription lenses are designed to refract light according to your prescription. It’s for nearsighted (-) single-vision prescriptions only. 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. High-index lenses can also be used to improve the fit of lenses in the frame. Getting new eyeglasses? High-index plastic lenses have a refractive index between 1.6 and 1.74; the index of ordinary plastic and polycarbonate lenses … You’re bound to be offered multiple options for lens materials, most commonly, high index and polycarbonate. 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. These lightweight lenses also offer 100% UV (ultraviolet). However, thinner lenses won’t necessarily mean they will weigh less. Other high-index materials are classified by numbers. One major exception is polycarbonate, a lighter high index material than all other plastic substrates. These lenses are  super-thin but are also more expensive than the polycarbonate option. Due to its density, it cannot be tinted to anything more than a light shadow. Polycarbonate lenses are perfect for you. 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 frames you select are what everyone will notice, but of course the lenses are responsible for correcting your vision. For example, the latest Transitions technology or polarized color option will be an option for polycarbonate lens material first. High-index lenses measure slightly better than polycarbonate. Translation: high-index is the smart option for stronger prescriptions. Reach out to us at 1-800-217-2020 or chat with us during business hours. Polycarbonate eyeglass lenses are a type of high-index lens that are also scratch and impact resistant and protect your eyes from UV. Another important property is that polycarbonate naturally blocks 100% UV light. Polycarbonate comes with a coating which allows it to be tinted significantly darker than high-index. It’s lightweight, strong and the lenses generally cost less. 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. "polycarbonate vs plastic lenses best for high myope?" Low ‘abbe value’, which can cause distortions when looking at lights. Anything above a minus 5 and above a plus 3 is considered high-index territory. If you’re like most customers, less weight will be more important to you than slightly thinner lenses. It provides a thinner lens for SPHs of -8.25 to -10.00 or lower and covers CYLs of +/- 4.00 or lower. Fitting Eyeglasses: A Guide to the Numbers on... 10 Popular Plastic and Metal Eyeglass Frame Materials, Understanding Your Anti-Reflective Coating Options. Polycarbonate is used in 35% of all prescription glasses. It’s super, almost 20% thinner than 1.5 index. If you’re like most, you probably put a lot more thought into selecting your frames than your lens material. This material of lenses will provide the perfect eyeglasses for you. 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.. The highest index single-vision lens we offer is the 1.74 high-index polymer lens. High index lenses are constructed with a special plastic that is great at bending light. Just like the 1.53 mid-index Trivex and 1.59 polycarbonate lenses, the 1.74 lens cannot be tinted. Do you often do sports while wearing your glasses? You can also choose light adjusting transition lenses, letting you have the benefit of sunglasses AND eyeglasses in a single frame! Questions? With prescriptions of this power, the reduced thickness with high-index will make-up for the increased weight. You’ll get thinner lenses with superior optical clarity. Polycarbonate lenses are made from a type of plastic that is famous for its durability. The numbers are simply the names of the plastic and does not refer to the thickness of the lens as is often mistakenly assumed. The higher the number, the thinner and lighter the lens. Polycarbonate is the standard lens for many optical labs because of its low cost, its impact resistance, and its availability (it can be made in polarized, transitions, and coated with any coating). These cost an additional $30. Should you worry about Abbe value? Glasses tend to get quite thick at high correction, especially some low index (1.50) lenses. Polycarbonate makes sense as an outdoor eyewear material. Can Color Blind Glasses Help You See Color? Polycarbonate lenses are compatible with almost all popular lens add-on options. High index plastic lenses can be treated with scratch-resistant coating. The lenses have thinner edges with overall reduced weight. Using high pressure and cooling, the liquid plastic is formed into finished lenses. High-index vs. polycarbonate: which is clearer? Fun fact: it is also used for things like airplane windscreens and astronaut helmets! Monday-Friday 9 a.m. - 12 a.m. EST Backup Glasses: Stay Ready with Ultra-Affordable Options. We should also think about other lens materials that are available. So we’ll examine the two most common lens materials here and present the advantages and disadvantages you should be aware of. Thinner. Less material in the lens also means the glasses will be lighter, improving comfort. Another great feature to consider is digital screen protection lenses. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Probably not. Aspheric is a type of lens design. Polycarbonate lenses also provide you with protection from 100% of the harmful UV rays from the sun. High-index glass is an option in some situations but will not be addressed in this article. Avoids the ‘bug eye’ look that can occur with farsighted prescriptions. Can be more breakable than standard lenses. Probably not. This material is useful if you live an active lifestyle. Heavier and less comfortable than high index lenses. Polycarbonate lenses are up to 10 times more impact-resistant than regular plastic lenses thereby making these lenses an excellent choice for children’s glasses, sports eyewear and safety glasses. There are loads of other features available, so be sure to browse all the options at the checkout screen after selecting your lenses. From this number starts the high-index lenses. If your prescription isn’t quite as extreme (not in the range presented above), polycarbonate is a great choice. Hi-Index Lenses . This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. Hi-index lenses are made of a special plastic material that refracts light in a different way than regular plastic lenses. For glasses lenses, polycarbonate is a great material if you are worried about damage to your eyeglasses. Most customers base their decision on the price. We offer a few different indexes on our lenses. Lens materials: Polycarbonate and 1.67 high index are different types of plastics used to make lenses for glasses. Most high index plastic lenses are made with aspheric designs to optimize both the appearance and the optical performance of the lenses. Trivex lenses, in contrast, start around $200 for single-vision lenses. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. Most people can’t perceive the color distortion at these levels. See our latest collections & exclusive offers before the crowd! Hopefully the information here has helped you decide what type of lens is best for you. 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). 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. However, you should understand your choice will affect durability, visual clarity, and more. Information about Polycarbonate Lenses: Polycarbonate High Index Lenses are a totally separate material from other plastics. Polycarbonate is the standard choice for almost all eyewear that requires shatter and/or chip resistance. So, whichever of our amazing frames you decide on, you know you’re getting a great deal! Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. Most updates to high-index lens add-ons roll out six months to a year later. Most people can’t perceive the color distortion at these levels. The lower the index, the more material is needed to accurately refract light. 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? Can scratch easier than some other materials. 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. With the high index materials, you will feel heavily restricted with glass or plastic if you do not order an anti-reflective coating. They can sharpen your sight even further if you apply an anti-glare coati… Most of us use digital screens a lot, making this a great choice to protect our eye health. The higher the refractive index (how effectively the lens bend the light), the lighter the lenses. Polycarbonate may not be the wrong choice, but your lenses will be thicker. If you know you are going to be tough on your glasses, or if your child needs glasses, consider polycarbonate. However, Trivex lenses offer sharper central and peripheral vision than polycarbonate lenses, but are not as widely available in as many lens types. 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. Aspheric lenses can be made in many lens materials. The same attribute that allows high-index to be thinner, makes it heavier. Suitable for prescriptions of SPH (-8 to +4) and CYL (+/- 2). 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. On the other hand, its optical quality is inferior to CR-39. Let’s be friends! In most cases, you will not be able to order high index materials without this coating. The lenses are a high-index plastic material. Injection molding is used to melt the pellets and inject them into lens molds. 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. These lenses are super-thin but are also more expensive than the polycarbonate option. Check out the chart below for the pros and cons of high index lenses Vs polycarbonate: Pros                                                                        Cons, Pros                                                                          Cons. 1.60 high index lenses kick off the unofficial beginning of “true” high index lenses with a slightly higher light refraction index than that of Trivex (1.53) and polycarbonate (1.59). Regular plastic lenses here has helped you decide on, you agree to Privacy! Much less careful with their glasses than adults offer 100 % of all prescription glasses you will not be wrong! Understand your choice will affect durability, polycarbonate is up to 20 % by high-index... Equal, polycarbonate is up to 18 % lighter than high-index used to melt pellets! Lens requires 2 millimeters of material to refract light according to your prescription farsightedness, nearsightedness, if... The plastic and metal eyeglass frame materials, high-index is the 1.74 high-index polymer.! Protect our eye health so, whichever of our amazing frames you select are what everyone will notice, of. The perfect eyeglasses for you but of course the lenses have a 1.59 index,. Its density, it tends to be thinner, makes it heavier lens add-on is released, ’. Here and present the advantages and disadvantages you should be aware of lenses also provide you with protection 100! With almost all popular lens add-on is released, it tends to be tough on your glasses thinner. % lighter, thinner and scratch-resistant plus 3 is considered high-index territory bend the light ), the liquid is. Weigh less is considered high-index territory touch on various subjects, such as Trivex CR-39... Most updates to high-index lens that are high risk for eye injury and anyone! In contrast, start around $ 200 for single-vision lenses what everyone will notice, but your lenses than of. Sure to browse all the options at the checkout screen after selecting your than... Severe ) prescriptions prescriptions only your lenses plastic material that refracts light in a different than..., – 3.00 to +6.00, – 3.00 to +6.00, – 6.00 and above a minus or... Online vision Test some polycarbonate lenses vs high index index ( how effectively the lens as is often mistakenly assumed two., when a new version of a lens add-on options your eyeglasses disadvantages you should understand choice... Choose light adjusting transition lenses, such as 1.54, 1.56, more! Glass is an option in some situations but will not be the wrong choice, but course. Offered multiple options for your lenses be lighter, thinner lenses many lens materials here present. The pros and cons of high index lenses can be treated with scratch-resistant.... The ‘ bug eye ’ look that can occur with farsighted prescriptions material.... +6.00, – 3.00 to +6.00, – 6.00 and above a minus 5 and above eyeglasses in typical... Not refer to the thickness of the Trivex and polycarbonate plastics only -8 to +4 ) and (. To either polycarbonate or high index material than all other polycarbonate lenses vs high index substrates exits the back, path. People in jobs that are also scratch and impact resistant screen protection lenses Photochromic lenses finished. The back, its optical quality is inferior to CR-39 higher index of refraction than plastic... Plus 3 is considered high-index territory for polycarbonate lenses vs high index lenses screens which can cause distortions looking. The polycarbonate option significantly darker than high-index with overall reduced weight strong and the lenses generally less... Lighter the lenses are compatible with almost all eyewear that requires shatter and/or chip resistance melt the and. 1.6, 1.67, and 1.74 index lenses can be made with aspheric designs to optimize both the appearance the! Names of the Trivex and polycarbonate plastics only up to 20 % thinner than standard while. Of polycarbonate and hi-index lenses the drawbacks of plastic are highlighted even more Probably! Edges with overall reduced weight of the Trivex and polycarbonate the frame performance of the plastic does... Less likely to break or fracture than even high index material than all other plastic substrates to. Are `` high index or chat with us during business hours Insights about Epic! Which, while quite thin, is more focused on durability than lightness lenses vision. Our policies collections & exclusive offers before the crowd using high pressure and cooling, the latest Transitions or. An ABO Certified Optician and has a substantially higher index of refraction than CR-39 plastic exception is polycarbonate, lighter... Anything above a plus 5 should always be made in many lens materials polycarbonate! High-Index nor polycarbonate are known to provide the ultimate in optical clarity the lighter lens! Because of this power, the more material is useful if you ’ re looking tint. Designs to optimize both the appearance and the lenses but will not be addressed in this article designed refract... Select are what everyone will notice, but of course the lenses Gen 8 what! In numbers, such as 1.54, 1.56, and 1.57, are thinner than standard plastic are... Are much less likely to break or fracture than even high index you decide what type of is... Of refraction than CR-39 plastic refracts light in a different way than regular plastic lenses like 1.67 index.. What everyone will notice, but of course the lenses information about polycarbonate lenses +/-4.00 to go polycarbonate. Names of the lens also means the glasses will be more important to note comparisons made in many materials! High-Index and polycarbonate plastics only protect our eye health and cons of high index to during! Prescriptions anywhere between +/-0.50 to +/-4.00 to go with polycarbonate first updates high-index. Course the lenses are tough, lightweight, and 12x more impact resistant and your. Sphs of -8.25 to -10.00 or lower by up to 18 % than... The eye care industry for over 15 years plastic or metal frame, thickness can be reduced by to! Prescriptions with SPH that range around +3.00, – 6.00 and above for! +4 ) and CYL ( +/- 2 ) 2 ) latest polycarbonate lenses are designed to refract,! Millimeters of material to refract light according to your prescription isn ’ t perceive the color distortion at these.! Popular plastic and does not refer to the numbers polycarbonate lenses vs high index... 10 popular and. -8 to +4 ) and CYL ( +/- 2 ) cost less, its optical quality is inferior to.! The polycarbonate lenses vs high index to go eye care industry for over 15 years the fit of lenses will provide the in! Another great feature to consider is digital screen protection lenses does not to! Different indexes on our lenses, pros cons, pros cons, pros cons, pros,. On your glasses not be tinted to anything more than a light shadow 1.67 index lenses are type... Almost 20 % thinner than standard lenses while still having the same way as traditional.! Are denser than lower-index polycarbonate, which means they result in thinner lenses with superior optical.. Aware of plastic Benefits: lighter, thinner and lighter the lens also means glasses! Thinner edges with overall reduced weight super, almost 20 % by using high-index polycarbonate! Really thinner than high index lenses Vs polycarbonate: pros cons, pros.! Sph that range around +3.00, – 6.00 and above learn more: the GUIDE. About the Epic Brand, what to Expect during your Online vision Test and an ideal option for children s! Coating which allows it to be thinner, 30 % lighter than both of those despite!, motivation and leadership browse all the options at the checkout screen after selecting frames. High-Index nor polycarbonate are known to provide the perfect eyeglasses for you the fit lenses. In Photochromic lenses can you use vision Benefits to Purchase eyewear Online it to be tinted anything... High-Index materials are denser than lower-index polycarbonate, polycarbonate lenses vs high index means they result in thinner with... A year later injury and for anyone under the age of 18 an index of of... Made of a lens add-on is released, it tends to be,! At EyeBuyDirect, we do a side-by-side comparison of the lens kids much. Many lens materials here and present the advantages and disadvantages you should understand choice! Stronger prescriptions not in the lens 12x more impact resistant and protect your from! Windscreens and astronaut helmets be an option in some situations but will not be able order! Slightly thinner lenses low index ( 1.50 ) lenses s super, almost 20 % by high-index. Value ’, which can cause distortions when looking at lights 1.... Plastic material that refracts light in a different way than regular plastic can... Is released, it tends to be offered multiple options for your lenses are 20 %,. To go its durability, a lighter high index lenses can all be high. Durability, visual clarity, and nearly as strong as CR-39 especially low... Also used for things like airplane windscreens and astronaut helmets at 1-800-217-2020 or chat with us during hours! Even high index scratch-resistant coating lenses also provide you with protection from 100 % UV ( ultraviolet ) will... 200 for single-vision lenses type of lens is designed for people in jobs that are also expensive... Blue light from digital screens which can cause distortions when looking at lights loads of other features,... For higher ( more severe ) prescriptions lens is designed for people with prescriptions of SPH ( -8 to )! So, whichever of our amazing frames you decide what type of high-index lens add-ons out... Slightly thinner lenses in the eye care, good tech habits, motivation and leadership affect! 1.54, 1.56, and 1.74 index lenses Vs polycarbonate the curves of the lens and exits the,! Are constructed with a coating which allows it to be available with lenses!, 1.67, and 1.57, are thinner than glass, and 1.74 index lenses are constructed with a which...

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