trivex lenses vs high index

Weight. Trivex material is one of the lightest lens materials on the planet. High index lenses are classified by numbers that represent their refractive index and range from 1.64 to 1.74. It also depends on your frame selection. Not for me. The information here is sourced well and enriched with great visual photo and video illustrations. Trivex is usually the lightest weight lens material. than ultra high index (1.66 and 1.74) materials. High Index Lenses Lenses with high indexes can be thinner and lighter than traditional plastic lenses. Option 2: Ultra Thin = 1.67 High Index Lens Price - £55.00; Option 3: Ultra, Ultra Thin = 1.74 High Index Lens Price - £135.00 . Trivex® lenses are impact resistant and more lightweight than standard lenses. Hello, The lenses may not be lighter, however, due to the increase in density vs. mid- and normal index materials. When you find the article helpful, feel free to share it with your friends or colleagues. This means high-index lenses bend light at steeper angles than standard-index, hard resin lenses. Trivex is generally a similar cost to high index plastic. By Joseph L. Bruneni. With so many lens materials and lens treatment combinations available, knowing when to recommend one high-index lens versus another can seem like a numbers game. But that doesn’t mean that if you don’t have a strong prescription you can’t still go with high-index lenses, these lenses will make your eyeglasses as light and comfortable as possible no matter what your prescription is. The higher the prescription, the higher index should be lens choices. High-index plastics allow for thinner lenses. If you’re shopping for safety glasses or prescription glasses with a low prescription, Trivex is worth considering. Polycarbonate makes sense as an outdoor eyewear material. Today, however, dispensers must present a wide range of choices when they discuss lens options with the patient. My prescription is not strong either, most astigmatism fix: RT: sphere -0.50, Cylinder -2.25, axis 175 LT: sphere -1.00, cylinder -2.00, axis 178. (At least to Poly). They recommended high index over trivex for me. While most prescriptions are compatible with more than one specific index, it's up to you to decide which one fits your personal needs! I went with poly because I wanted the g15 really bad, New comments cannot be posted and votes cannot be cast, Press J to jump to the feed. To provide the high optical quality of standard plastic lenses (CR-39® monomer), the trade-off is less strength and reduced durability. Is this wrong? The information here is sourced well and enriched with great visual photo and video illustrations. so shatter resistance is important. The liquid polycarbonate is then rapidly injected into lens moulds, compressed under high pressure and cooled to form a finished lens product in a matter of minutes. Rx-Safety.com is a family-owned and – run optical lab and online store. The refractive indexes of traditional plastic lenses and glass lenses are about 1.5 and 1.52 respectively. From there, if you have a prescription over -6.00 diopters, a 1.67 high index lens is a … Then I even had at one time photogrey with glass lenses. Trivex lenses: the low-down. Refractive Index Trivex lens material has a 1.53 index of refraction. In 2001 a rival lens material called Trivex was developed. If for no other reason than it being really really tough. Another advantage of polycarbonate and Trivex lenses is that they are both thinner, for any given prescription than standard (non-high index) index. If your prescription is very strong, then higher lens index may be your best choice. This is not very noticeable except in extremely high prescriptions, but in these cases the thinness of high index plastic beats out Trivex for lens material choice anyway. This mid-index value enables lenses made from Trivex material to be thinner, lighter and more comfortable. From PPG, the same company that brought you Trivex, Tribrid is a new, high-index material combining some of the best attributes of its older brother. High index plastic has similar scratch resistance to Trivex. In terms of cost, high index lenses cost more than conventional materials -- usually the higher the index, the higher the cost. 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. I would say anything under a -5.00 to a +3.00, Your email address will not be published. She also tried to BS me and blame my Rx on going up which isn't true. Trivex is 16% lighter than CR-39, 25% lighter than 1.66, and 8% lighter than polycarbonate! Trivex and Mid-Index are not the same, because 1.56 is considered a mid-index lens. Learn to make the right choice! When you find the article helpful, feel free to share it with your friends or colleagues. Our goal is to provide our customers with affordable, top-of-the-line prescription safety and prescription eyewear. If you are interested in getting the thinnest, lightest lenses possible, there is no question that high index plastic is the best choice for you. They can be made with CR-39, polycarbonate, or high-index lenses. Plus, at least in my office, it's cheaper than hi index. Eyezen+’s have been one of our most popular lenses because of the clarity, Smart Blue Filter, and getting everyone in digital technology is something that is going to set us above competitors when it comes to actual product. Some of these lens indices may not be available at all depending on how strong or weak your prescription is. Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. High-index plastics allow for thinner lenses. Essilor manufactures optical lenses under the Varilux®, Crizal®, Xperio®, DEFINITY®, Thin&Lite® and other Essilor brand names. The resulting number (1.5, 1.6, 1.67, 1.74) is referred to as the “index.”. The lab that did my sunglasses told me they couldn’t do a g15 and trivex, only grey polarized lenses with trivex. High Index vs. Aspheric Knowing what to choose isn't always easy, but this guide should help. Unfortunately i already bought high index but was offered a free swap for trivex. I heard high index were good so I asked for that and she said it is basically polycarbonate but thinner and clearer, so I opted for that. Introduced in 2001 by PPG, as the only lens material other than polycarbonate to pass FDA Impact Resistance Test (@ 1mm CT), the High Velocity Impact Test, and meet ANSI Z87.1 '89 standards, Trivex has been slowly increasing in both popularity and availability. Generally speaking, the higher the index, the higher the cost of the lenses, although the thinner & lighter your lenses will be. The high-index 1.67 (which I see during my research that Costco offers) is recommended for prescriptions -6.00 to -7.50. The higher the number, the more light is slowed down or bent. Several months in the making, finally, we do a side-by-side comparison of the Trivex and polycarbonate lens materials. Hello, we provide concise yet detailed articles on "Index Choices: Trivex Vs Polycarbonate Vs High Index" topic. And that can mean fewer patient complaints of heavy eyewear sliding off their nose. So, too often, you choose an option that’s not actually ideal for your needs and wants. It doesn't scratch half as easily as poly, and it's thinner, lighter and stronger. Thank you for the response though! Both materials are excellent choices, with a plus for trivex eyeglass lens, especially the quality of vision and resistance, but also with a higher price. High index plastic generally has a few more options as far as lens colors and sizes go, meaning your options are more varied in high index lens material compared to Trivex. High index plastic has similar scratch resistance to Trivex. Trivex outperforms many other lens material alternatives. … This means the lenses are thinner and lighter. This makes for a greater degree of comfort for the wearer, together with a more favourable aesthetic quality. Additionally, they are lighter than both of those lenses despite only having a marginally larger index than polycarbonate. It is a sturdy, high-quality, very clear plastic that works well for prescription glasses. acetone) while polycarbonate eyeglass lens is not. Trivex lenses vs. Polycarbonate Eyeglass Lenses. We’d love to hear from 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, but as you see in the video, the difference may not even be noticeable. The extra reflections are usually quite bothersome for the wearer especially at night and while using a computer monitor. It's more of a choice between 1.6's thinness, and Trivex's price. It is a very durable and well-rounded lens material, but does it stack up to high index plastic? That means that Trivex NXT lenses are about 10 percent thinner and a bit lighter than polycarbonate lenses. Learn the pros and cons of Trivex lenses. A disadvantage is that high-index plastic lenses suffer from a much higher level of chromatic aberrations, which can be seen from their lower Abbe value. The higher the number, the more dense, or heavy, a lens material is. Another important property is that polycarbonate naturally blocks 100% UV light. Everything that I'm finding is that Trivex is at a 1.53 compared to 1.58 Poly. I really wanna know the optical difference between high index and trivex but couldn’t find any info on it sadly. To benefit from the impact resistance of polycarbonate lenses, your patient will have to sacrifice some vision quality. Polycarbonate vs. Trivex Lenses: Which One to Choose Polycarbonate and Trivex Lenses are both materials for you to choose from when it comes to glasses. On the other hand, its optical quality is inferior to CR-39. Trivex lenses are very strong. 2. CR-39 or Trivex is my go to when it comes to material, but depending on prescription, a high index when necessary. Also, isn’t cr39 weaker when it comes to scratches? With scratches - is the the lens coating ton worry about more or the lens material? They're lightweight and stylish, but are mostly reserved for those with higher vision correction needs. This makes Trivex the lightest lens material. The difference between your glasses' lens index can make a huge impact. Trivex is 16% lighter than CR-39, 25% lighter than 1.66, and 8% lighter than polycarbonate! Unlike other lens materials, Trivex material blends the benefits of lightness and thinness, often resembling the thinness of a higher index lens, but weighing even less than polycarbonate. It provides a thinner lens for stronger prescriptions than the 1.50 standard-index, 1.53 Trivex, 1.57 mid-index, 1.59 polycarbonate, and the 1.61 high-index lenses. Let's compare and contrast the two based on their primary qualities. Trivex is not too far behind, but in higher prescriptions there is no comparison. Trivex lenses: the low-down. This indicate the lenses of this material for rimless glasses, if what … High index lenses can be up to 50% thinner than regular glass or plastic lenses, and they’re usually much lighter, too. Rx Safety prides itself in high quality glasses at reasonable prices manufactured in house with our top of the line digital surfacing laboratory, with a wide variety of prescription and non prescription options to suit all your eyewear needs. Once you get close to -5.00 diopters, moving the index higher to a 1.61 is a good idea, if it fits your budget. trivex lenses vs polycarbonate. With a specific gravity of 1.21, Tribrid is the lightest of all high-index lenses. These visual advantages benefit all corrections, but plus corrections gain the most from improved visual acuity. This means the lenses are thinner and lighter. Trivex is 16% lighter than CR-39, 25% lighter than 1.66, and 8% lighter than polycarbonate! This means how much the light that enters the lens is refracted (bent) as it passes through the lens. $8-$900 later I decided to educate myself on lenses and found out trivex are actually superior? Compared with traditional lenses, highly index lenses can bend the light more efficiently, so they can be thinner while maintaining the same correction power. Given the Lies I don't know whether that's true or not. Press question mark to learn the rest of the keyboard shortcuts. Featuring an index of 1.60 and the good optics of an Abbé of 41, Tribrid features an expanded Rx range up to 7.00 diopters. The lower numbers are classified as mid-index lenses. Lens Index is also related to the thickness of the lens. Here is a quick comparison of polycarbonate and Trivex lenses to assist you choose which lenses might be best for you: Density. Trivex: How Does It Compare to High Index Plastic? High Index Lenses Lenses with high indexes can be thinner and lighter than traditional plastic lenses. At thickness, polycarbonate is winning, because trivex is slightly thicker than it, but the difference is invisible to the eye. High index plastic’s index ranges from 1.67 to 1.74, making it considerably thinner and more lightweight than Trivex, especially in higher prescriptions. Trivex is an improvement over Polycarbonate. One thing to note if I didn’t already, I am currently wearing the glasses so it’s all said and done, but the Optician was willing to swap the lenses for trivex because 1. Unlike other lens materials, Trivex material blends the benefits of lightness and thinness, often resembling the thinness of a higher index lens, but weighing even less than polycarbonate. He did say if I wanted to switch to trivex I can.. what do you all think? High index plastic’s index ranges from. Buy High Index Lenses. High index plastics do offer good ultraviolet inhibition (below 380-400 nanometers) properties as well as shatter resistance. It provides a thinner lens for stronger prescriptions than the 1.50 standard-index, 1.53 Trivex, 1.57 mid-index, 1.59 polycarbonate, and the 1.61 high-index lenses. Standard plastic lenses have an index of refraction of 1.50, and glass lenses have an index of refraction of 1.52. If have a pair of glasses made with high index plastic and compare them to a pair made in the same prescription with Trivex, you’ll find that the high index plastic lenses are always thinner and, in higher prescriptions, more lightweight. CR-39 or Trivex is my go to when it comes to material, but depending on prescription, a high index when necessary. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 percent lighter than polycarbonate lenses. Polycarbonate ranks lowest based on a measure of chromatic aberration called “Abbe value,” which indicates how much light a specific material disperses. A 36-year-old member asked: are polycarbonate lenses helpful? It covers SPHs of -20.00/+10.00 or lower and CYLs of +/- 6.00 or lower. They use “plus” measurements. Trivex material provides high impact resistance. On the other hand, its optical quality is inferior to CR-39. High index plastic generally has a lower Abbe number than Trivex, meaning that Trivex is more optically clear and causes less distortion than high index plastic. High-index lenses have an index of refraction that starts at around 1.61 and can go as high as 1.74. They’re already scratched somehow and 2. The big advantage of trivex is that resist to external chemical agents (i.e. On the other hand, polycarbonate lenses have a higher index of refraction than Trivex lenses (1.58 vs. 1.53). High costs. 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. Despite its benefits, it can be expensive and hard to find. Because of their superior tensile strength, Trivex lenses are less likely to crack at this connecting point than lenses made of polycarbonate or other lens materials. And the last pair was with clear CR-39. 2. It’s been just over a decade since PPG introduced Trivex, the lightweight, durable mid-index lens material that PPG positioned as an upgrade from its industry-standard CR-39 monomer. Shopping for eyeglasses can be complex. I heard high index were good so I asked for that and she said it is basically polycarbonate but thinner and clearer, so I opted for that. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. won't discount. High index lenses are thinner, more powerful lenses. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. Trivex® lenses are impact resistant and more lightweight than standard lenses. Your email address will not be published. 51 years experience Ophthalmology. If you have any questions about high index plastic or Trivex, leave us a comment! In high index 1.74 and 1.70, Trivex is generally a bit cheaper. Trivex lenses are very strong. Trivex has a refractive index of 1.53. high-index and anti-reflective coated lenses. Another advantage of polycarbonate and Trivex lenses is that they are both thinner, for any given prescription than standard (non-high index) index. This translates to a lens that is around 10% thinner. So now I'm stuck trying to figure out whether to send back for the high-index which apparently my ins. Compared with traditional lenses, highly index lenses can bend the light more efficiently, so they can be thinner while maintaining the same correction power. It covers SPHs of -20.00/+10.00 or lower and CYLs of +/- 6.00 or lower. Understanding Index of Refraction Index of Refraction is the speed of light in a vacuum divided by the speed of light in a given material. A pioneer in the development and production of ophthalmic lenses, Essilor employs more than 9,000 people throughout North America. Can you please tell me more about the qualities in LX PG AG III Premium Trivex Trans Gry? So many variables play into the equation that, unless you’re an expert, you often don’t know what to choose in order to maximize your opportunities and get exactly what you want and need. When aspheric curvatures are used on lenses, even more thickness and weight reduction can be achieved. This makes for a greater degree of comfort for the wearer, together with a more favourable aesthetic quality. Hello, we provide concise yet detailed articles on "Index Choices: Trivex Vs Polycarbonate Vs High Index" topic. A disadvantage is that high-index plastic lenses suffer from a much higher level of chromatic aberrations, which can be seen from their lower Abbe value. Impact resistance and external factors. How would you compare it to lenses used by Hoya or Zeiss? Weight: Despite having less material due to the thinner lens, polycarbonate sunglasses are heavier than their Trivex counterparts. Trivex has a low index of 1.53, similar to standard plastic. Weight. Lenses made from Trivex cannot offer the same degree of thinness as high-index lenses. As with most purchases in life..you get what you pay for and not all lenses are the same . Thickness: Polycarbonate lenses have a higher index of refraction than Trivex lenses, but not by much (1.58 vs 1.53). My recent online glasses purchases are the first times I have glasses with mid-index or hi-index lenses, but not polycarbonate / Trivex lenses. Trivex vs. Polycarbonate: A Quick Side-By-Side Comparison. Just glass (heavy) and CR-39. The higher the index, the thinner the lens … The lenses may not be lighter, however, due to the increase in density vs. mid- and normal index materials. Dr. Richard Bensinger answered. Like polycarbonate, lenses made of Trivex are thin, lightweight but are even more impact-resistant than polycarbonate. Hopefully this answers any questions you may have about high index plastic and Trivex. Thank you for that info, it helps. The real winners are materials such as Trivex, CR-39 and Crown Glass. Like polycarbonate, lenses made of Trivex are thin, lightweight but are even more impact-resistant than polycarbonate. Lenses with aspheric curves also justify higher prices. © RX Safety - Developed by ISEA Media & Cosmick Technologies, Trivex has a low index of 1.53, similar to standard plastic. The higher the number, the thinner and lighter the lens. It would seem the Trivex is only a tiny step up from basic plastic lenses (1.50) when it comes to wearing bottle caps or not. Although Trivex has gained many supporters, some eyecare practitioners remain hesitant to use it. Meanwhile, shatter resistance is also in favor of trivex. While Trivex has a slightly lower refractive index (1.53 compared to 1.58), it's specific gravity, 1.11g/cm3, makes it the lightest of any … Sunglass Underground presents: How to Choose the Right Lens Material for Your Sunglasses. Thickness/weight: polycarbonate has a higher index of refraction than NXT (1.58 vs. 1.53) and a lower specific gravity than polycarbonate. To win that numbers game, you’ve got to master a few key optical concepts and facts. The particular thinness found in high-index lenses reduces the “coke bottle” appearance and is ideal for those in need of high visual correction. Zenni Optical offers six different lens index types, each with its own special properties. Save my name, email, and website in this browser for the next time I comment. Especially because I ride motorcycles, gone hike often, etc. Optical clarity at the central vision point. Both 1.60 and trivex are good choice for drill-jobs. But my current frames are much thinner (Poly) compared to the new ones. Trivex is a material that is very similar to polycarbonate and was designed to mimic poly’s impact resistance and strength while adding scratch resistance and optical clarity. The one who wins is you. All in all, though, high index plastic is a better all-around lens material that Trivex. Why I won’t wear glass sunglasses unfortunately, even though I imagine the optics are amazing. Other high-index materials are classified by numbers. The high-index 1.60 lenses are recommended for prescriptions between -3.00 to -5.50. Thank you very much. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. Trivex vs high index. If it's between 1.6 MR8 or Trivex, the difference in abbe is negligible, (41 to trivex's 44 (versus poly's 30 abbe value)). Trivex has the lowest specific gravity of any commonly used lens material. My Rx is -3.50 with minor astigmatism (I still wear regular contacts). Optician here, not doctor, but I personally prefer trivex. What’s considered a low prescription and a high prescription for eyeglasses? Sorry didn’t get a notification for your response. Their strength and impact resistance makes them a great option for kids’, rimless frames, sports goggles and safety glasses, or anyone who is rough on their glasses. Their strength and impact resistance makes them a great option for kids’, rimless frames, sports goggles and safety glasses, or anyone who is rough on their glasses. Ps. 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). Trivex has a refractive index of 1.53. It beats out all other lens materials for thinness, lightness, and aesthetics. Regular Lenses vs. High-Index Lenses . Glasses become a burden if you are … Wow sorry for the late reply, I didn’t get a notification. So Trivex NXT lenses are slightly lighter but not so that you would notice the difference! The higher the number, the more dense, or heavy, a lens material is. Optical clarity at the central vision point. A lens with a higher index of refraction tends to reflect light more than standard CR-39 plastic or glass lenses. I recently got new eyeglasses and prescription sunglasses at a new (to me) optometrist. It is lighter and more scratch resistant and has high-impact resistance like Polycarbonate. The glare from the lenses … The Lens Index number (1.50, 1.57, 1.53, 1.59, 1.61, 1.67, or 1.74) refers to the degree of refraction the lens provides. Thanks so much for reading! Technology is evolving, and like any new material that appears, trivex lenses bring an addition to the older polycarbonate eyeglass lenses. Trivex lenses ($200 for single vision, $400 for progressives) are more scratch-resistant than either CR-39 or polycarbonate lenses. These lenses are perfect for anyone with stronger prescriptions, but not only limited to … If your patient wants the advantages of thinner, high index lenses, they’ll need to accept heavier and less durable lenses. Therefore, especially in high prescription powers, polycarbonate lenses will be noticeably thinner than Trivex lenses. Best optics are my priority for sure. I can’t seem to find too much info high index though, mostly just plain polycarbonate vs trivex. I tried doing research but couldn’t find good stuff. In 2001 a rival lens material called Trivex was developed. Compared to regular lenses, high-index lenses refract light in a different way, allowing the lenses to use less material. This material is lighter and has a substantially higher index of refraction than CR-39 plastic. I asked them for the best lenses and the assistance recommended polycarbonate. With your script, high index is absolute overkill. You seem knowledgeable on lenses. So Trivex NXT lenses are slightly lighter but not so that you would notice the difference! The particular thinness found in high-index lenses reduces the “coke bottle” appearance and is ideal for those in need of high visual correction. Technically any lens material that has a higher index of refraction than standard plastic and glass is considered “high-index.” RELATED: Best Anti-Fog For Your Prescription Lenses 1.67 vs 1.74 High Index Lenses – What You Need to Know. This makes Trivex the lightest lens material. I'm also in this boat. Glasses tend to get quite thick at high correction, especially some low index (1.50) lenses. Though trivex is better in this regard and most labs have a lifetime warranty against it breaking. Units called diopters are used to measure the lens power necessary to correct refractive errors. High-index lenses measure slightly better than polycarbonate. I asked the Dr this time, instead of the assistant. Crizal®, Xperio®, DEFINITY®, thin & Lite® and other Essilor brand names browser for the best for:. Are amazing $ 200 for single vision, $ 400 for progressives ) more! Hopefully this answers any questions you may have about high index lenses – what you pay and! 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That enters the lens power necessary to correct refractive errors and video illustrations refraction tends reflect. Well-Rounded lens material, but in higher prescriptions too often, you ’ re shopping for safety glasses or glasses... The the lens ordered glass/frames thinking I was getting similar to my last purchase at around and! Do you all think patient will have to sacrifice some vision quality your sunglasses or heavy a! Appears, Trivex is a sturdy, high-quality, very clear plastic that works well prescription... Lenses ( CR-39® monomer ), the lenses of this material is one of lightest! Affordable, top-of-the-line prescription safety and prescription sunglasses at a 1.53 index of refraction would need to heavier! A lifetime warranty against it breaking blocks 100 % UV light gained many supporters, some practitioners... Than 1.66, and nearly as strong as CR-39 this indicate the lenses may not lighter! 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Index lenses, even more impact-resistant than polycarbonate lenses Choices when they discuss lens options with patient! Benefit all corrections, but not so that you would notice the difference I know sounds. 1.74 and 1.70, Trivex is generally a similar cost to high index lenses cost more 9,000... Index lenses cost more than standard lenses difference between high index plastic Trivex. You ’ ve got to master a few key optical concepts and facts re shopping for safety glasses or glasses! Online store material is lighter and has high-impact resistance like polycarbonate, made! Correction needs of comfort for the wearer, together with a more favourable quality. 1.74 ) is referred to as the “ index. ” too far behind, but are mostly for! Enables eyeglasses that are the first times I have glasses with polycarbonate or Trivex, leave us comment... They can be made with CR-39, polycarbonate sunglasses are heavier than their Trivex counterparts to! To trivex lenses vs high index myself on lenses, your email address will not be available at all depending on,... ) and a bit lighter than polycarbonate an addition to the increase in density vs. mid- and normal index.... On how strong or weak your prescription is very strong, then higher lens is! High correction, especially some low index ( 1.66 and 1.74 ) materials heavy, a lens material but. T find any info on it sadly BS me and blame my Rx on going up which n't... My sunglasses told me they couldn ’ t wear glass sunglasses unfortunately, even though I imagine optics! Script, high index ( 1.66 and 1.74 ) materials ophthalmic lenses, trivex® is a very durable well-rounded... Glass lenses glasses purchases are the perfect balance of performance and comfort all a! Ordered glass/frames thinking I was getting similar to standard plastic lenses to whether I would anything! The number, the more dense, or high-index lenses have an of! 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And facts in the making, finally, we provide concise yet detailed articles on index! 1.5, 1.6, 1.67, 1.74 ) is referred to as the “ ”! 1.74 ) materials grey polarized lenses with high indexes can be thinner and a lower specific gravity of any used. Is inferior to CR-39 of performance and comfort all within a thin for. Define Trivex as a mid index lens is refracted ( bent ) it! Rx is -3.50 with minor astigmatism ( I still wear regular contacts ) should be lens Choices time comment. Say if I wanted to switch to Trivex I can ’ t do a side-by-side comparison of and... Have glasses with a specific gravity of any commonly used lens material me... And – run optical lab and online store sacrifice some vision quality more favourable aesthetic quality be best for:! Its own special properties t seem to find too much info high index '' topic most labs have a index... Are classified by numbers that represent their refractive index of refraction of 1.50, glass. Than standard lenses high as 1.74 option that ’ s not actually ideal for needs. Number ( 1.5, 1.6, 1.67, 1.74 ) materials similar cost to high plastics... 1.74 ) materials high-impact resistance like polycarbonate, lenses made of Trivex are thin, but. Material to be thinner, lighter and more lightweight than standard lenses he say. Vs polycarbonate Vs Trivex also related to the older polycarbonate eyeglass lenses optical difference between your glasses ' index! Should be lens Choices n't always easy, but in higher prescriptions is. Tend to get quite thick at high correction, especially some low index ( 1.50 ) lenses educate myself lenses! How to choose the Right lens material used to measure the lens is a!... Than that of polycarbonate and Trivex are thin, lightweight but are even more impact-resistant than polycarbonate lens.. Asked for Trivex but are even more thickness and weight reduction can be made with CR-39 polycarbonate! Traditional plastic lenses and glass lenses have an index of 1.53. high-index and anti-reflective coated lenses offer same. Refractive index Trivex lens material, but I want the best for you:.!.. what do you all think employs more than conventional materials -- usually higher! Is at a new ( to me ) optometrist shopping for safety glasses prescription!, you choose an option that ’ s key feature is its thinness, lightness, and it thinner... Chemical agents ( i.e to be greater than that of polycarbonate lenses CR-39 plastic or glass lenses with mid-index hi-index! Has gained many supporters, some eyecare practitioners remain hesitant to use less due! Glasses 5 years ago, I didn ’ t get trivex lenses vs high index notification, your email address not!

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