Trivex is a material developed for military purposes. To provide the high optical quality of standard plastic lenses (CR-39® monomer), the trade-off is less strength and reduced durability. These visual advantages benefit all corrections, but plus corrections gain the most from improved visual acuity. This makes Trivex the lightest lens material. The higher the number, the more dense, or heavy, a lens material is. He did say if I wanted to switch to trivex I can.. what do you all think? High index lenses can be up to 50% thinner than regular glass or plastic lenses, and they’re usually much lighter, too. Technology is evolving, and like any new material that appears, trivex lenses bring an addition to the older polycarbonate eyeglass lenses. 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. Between poly and trivex, trivex is definitely the better material. 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. I'm going to get new glasses now, and when I went into a local shop recently, the optician suggested a high index lens (either 1.6 or 1.67) and said there was no reason to get Trivex, which cost 50% more. This means high-index lenses bend light at steeper angles than standard-index, hard resin lenses. They're lightweight and stylish, but are mostly reserved for those with higher vision correction needs. 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)). But my current frames are much thinner (Poly) compared to the new ones. Though trivex is better in this regard and most labs have a lifetime warranty against it breaking. Hopefully this answers any questions you may have about high index plastic and Trivex. Learn to make the right choice! 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. High Index Lenses Lenses with high indexes can be thinner and lighter than traditional plastic lenses. And that can mean fewer patient complaints of heavy eyewear sliding off their nose. Both 1.60 and trivex are good choice for drill-jobs. Also, isn’t cr39 weaker when it comes to scratches? The lenses may not be lighter, however, due to the increase in density vs. mid- and normal index materials. 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. If your prescription is very strong, then higher lens index may be your best choice. 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. I really wanna know the optical difference between high index and trivex but couldn’t find any info on it sadly. My recent online glasses purchases are the first times I have glasses with mid-index or hi-index lenses, but not polycarbonate / Trivex lenses. If Poly is thinner how is Trivex better/thinner? That means that Trivex NXT lenses are about 10 percent thinner and a bit lighter than polycarbonate 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 . Generally speaking, the higher the index, the higher the cost of the lenses, although the thinner & lighter your lenses will be. The information here is sourced well and enriched with great visual photo and video illustrations. Compared with traditional lenses, highly index lenses can bend the light more efficiently, so they can be thinner while maintaining the same correction power. I can’t seem to find too much info high index though, mostly just plain polycarbonate vs trivex. CR-39 or Trivex is my go to when it comes to material, but depending on prescription, a high index when necessary. The information here is sourced well and enriched with great visual photo and video illustrations. As to whether I would define Trivex as a mid index lens is a whole other subject. 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 not too far behind, but in higher prescriptions there is no comparison. These lenses are perfect for anyone with stronger prescriptions, but not only limited to … 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). High-index lenses have an index of refraction that starts at around 1.61 and can go as high as 1.74. 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 particular thinness found in high-index lenses reduces the “coke bottle” appearance and is ideal for those in need of high visual correction. It has better optics than poly and doesn’t scratch as easily, while still being impact and shatter resistant. I would say anything under a -5.00 to a +3.00, Your email address will not be published. The particular thinness found in high-index lenses reduces the “coke bottle” appearance and is ideal for those in need of high visual correction. I tried doing research but couldn’t find good stuff. acetone) while polycarbonate eyeglass lens is not. This means the lenses are thinner and lighter. The higher the number, the thinner and lighter the lens. Other high-index materials are classified by numbers. 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. A 36-year-old member asked: are polycarbonate lenses helpful? Trivex and Mid-Index are not the same, because 1.56 is considered a mid-index lens. Trivex outperforms many other lens material alternatives. High index plastics do offer good ultraviolet inhibition (below 380-400 nanometers) properties as well as shatter resistance. The real winners are materials such as Trivex, CR-39 and Crown Glass. It is a very durable and well-rounded lens material, but does it stack up to high index plastic? 1.50 Blokz Standard Index (Additional $16.95) 1.53 Blokz Trivex Impact Resistant (Additional $39.95) 1.61 Blokz High-Index (Additional $29.95) 1.67 Blokz High-Index (Additional $49.95) Polycarbonate vs. Trivex Lenses: A Quick Comparison. From there, if you have a prescription over -6.00 diopters, a 1.67 high index lens is a … The glare from the lenses … Trivex lenses: the low-down. I asked the Dr this time, instead of the assistant. Polycarbonate makes sense as an outdoor eyewear material. 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. Especially because I ride motorcycles, gone hike often, etc. Trivex has a refractive index of 1.53. It doesn't scratch half as easily as poly, and it's thinner, lighter and stronger. They recommended high index over trivex for me. Can you please tell me more about the qualities in LX PG AG III Premium Trivex Trans Gry? To benefit from the impact resistance of polycarbonate lenses, your patient will have to sacrifice some vision quality. Either has advantages and disadvantages. With your script, I would probably recommend poly or trivex (though honestly depending on your frame choice you could probably get away just as well with CR39 plastic). Polycarbonate makes sense as an outdoor eyewear material. Standard plastic lenses have an index of refraction of 1.50, and glass lenses have an index of refraction of 1.52. In 2001 a rival lens material called Trivex was developed. 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. Lens Index is also related to the thickness of the lens. The higher the number, the more dense, or heavy, a lens material is. Thank you very much. than ultra high index (1.66 and 1.74) materials. In 2001 a rival lens material called Trivex was developed. High-index plastics allow for thinner lenses. Therefore, especially in high prescription powers, polycarbonate lenses will be noticeably thinner than Trivex lenses. High index lenses are classified by numbers that represent their refractive index and range from 1.64 to 1.74. Meanwhile, shatter resistance is also in favor of trivex. Glasses become a burden if you are … If you are farsighted, the lenses are usually thinner at the edge and thicker at the center. Trivex is more impact resistant than high index plastic, making it a much better choice for safety glasses or other types of glasses that need to meet certain impact requirements. They can be made with CR-39, polycarbonate, or high-index lenses. Just glass (heavy) and CR-39. Plus, at least in my office, it's cheaper than hi index. Trivex material provides high impact resistance. And Trivex has the lowest specific gravity of any commonly used lens material. So, too often, you choose an option that’s not actually ideal for your needs and wants. The high-index 1.60 lenses are recommended for prescriptions between -3.00 to -5.50. 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. The higher the index, the thinner the lens … On the other hand, its optical quality is inferior to CR-39. If you’re shopping for safety glasses or prescription glasses with a low prescription, Trivex is worth considering. On the other hand, its optical quality is inferior to CR-39. The lower numbers are classified as mid-index lenses. This means the index of refraction would need to be greater than that of polycarbonate and Trivex (>1.60). Your email address will not be published. You seem knowledgeable on lenses. Polycarbonate Abbe value = 30. Trivex has a low index of 1.53, similar to standard plastic. Trivex is 16% lighter than CR-39, 25% lighter than 1.66, and 8% lighter than polycarbonate! This indicate the lenses of this material for rimless glasses, if what … Trivex is 16% lighter than CR-39, 25% lighter than 1.66, and 8% lighter than polycarbonate! Essilor manufactures optical lenses under the Varilux®, Crizal®, Xperio®, DEFINITY®, Thin&Lite® and other Essilor brand names. Several months in the making, finally, we do a side-by-side comparison of the Trivex and polycarbonate lens materials. high-index and anti-reflective coated lenses. 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). CR-39 or Trivex is my go to when it comes to material, but depending on prescription, a high index when necessary. A pioneer in the development and production of ophthalmic lenses, Essilor employs more than 9,000 people throughout North America. 2. The lady at the doc told me she gave me Trivex and that Trivex is a 1.60 (which is a lie!) To win that numbers game, you’ve got to master a few key optical concepts and facts. What’s considered a low prescription and a high prescription for eyeglasses? Therefore, high-index lenses need … This makes for a greater degree of comfort for the wearer, together with a more favourable aesthetic quality. 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. How would you compare it to lenses used by Hoya or Zeiss? Trivex vs. Polycarbonate: A Quick Side-By-Side Comparison. This makes for a greater degree of comfort for the wearer, together with a more favourable aesthetic quality. If your patient wants the advantages of thinner, high index lenses, they’ll need to accept heavier and less durable lenses. The big advantage of trivex is that resist to external chemical agents (i.e. The difference between your glasses' lens index can make a huge impact. 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. 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. Weight. and better than Poly. Thickness/weight: polycarbonate has a higher index of refraction than NXT (1.58 vs. 1.53) and a lower specific gravity than polycarbonate. Hello, we provide concise yet detailed articles on "Index Choices: Trivex Vs Polycarbonate Vs High Index" topic. Another advantage of polycarbonate and Trivex lenses is that they are both thinner, for any given prescription than standard (non-high index) index. All in all, though, high index plastic is a better all-around lens material that Trivex. 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. 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. Buy High Index Lenses. 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. Optician here, not doctor, but I personally prefer trivex. Shopping for eyeglasses can be complex. It beats out all other lens materials for thinness, lightness, and aesthetics. This means the lenses are thinner and lighter. I recently got new eyeglasses and prescription sunglasses at a new (to me) optometrist. It is a sturdy, high-quality, very clear plastic that works well for prescription glasses. I asked them for the best lenses and the assistance recommended polycarbonate. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. When aspheric curvatures are used on lenses, even more thickness and weight reduction can be achieved. Not for me. With your script, high index is absolute overkill. (At least to Poly). Trivex is 16% lighter than CR-39, 25% lighter than 1.66, and 8% lighter than polycarbonate! Is this wrong? High Index Lenses Lenses with high indexes can be thinner and lighter than traditional plastic lenses. Why I won’t wear glass sunglasses unfortunately, even though I imagine the optics are amazing. High index plastic has similar scratch resistance to Trivex. Rx-Safety.com is a family-owned and – run optical lab and online store. Trivex® lenses are impact resistant and more lightweight than standard lenses. Some of these lens indices may not be available at all depending on how strong or weak your prescription is. So Trivex NXT lenses are slightly lighter but not so that you would notice the difference! High-index lenses measure slightly better than polycarbonate. Let's compare and contrast the two based on their primary qualities. 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. 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. Trivex® lenses are impact resistant and more lightweight than standard lenses. 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. Unfortunately i already bought high index but was offered a free swap for trivex. Thickness: Polycarbonate lenses have a higher index of refraction than Trivex lenses, but not by much (1.58 vs 1.53). It is lighter and more scratch resistant and has high-impact resistance like Polycarbonate. Trivex has a refractive index of 1.53. With a specific gravity of 1.21, Tribrid is the lightest of all high-index lenses. Compared with traditional lenses, highly index lenses can bend the light more efficiently, so they can be thinner while maintaining the same correction power. Thickness/weight: polycarbonate has a higher index of refraction than NXT (1.58 vs. 1.53) and a lower specific gravity than polycarbonate. A lens with a higher index of refraction tends to reflect light more than standard CR-39 plastic or glass lenses. 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. These lenses offer around ten 10 times more resistance to impact damage than traditional lenses and their properties, together with complete 100% … And Trivex has the lowest specific gravity of any commonly used lens material. Twenty years ago, the act of explaining lens options to a patient was a simple matter of asking, "Which would you prefer for your new lenses, glass or hard resin?" Here is a quick comparison of polycarbonate and Trivex lenses to assist you choose which lenses might be best for you: Density. This mid-index value enables lenses made from Trivex material to be thinner, lighter and more comfortable. Then I even had at one time photogrey with glass lenses. Zenni Optical offers six different lens index types, each with its own special properties. Impact resistance and external factors. The lenses may not be lighter, however, due to the increase in density vs. mid- and normal index materials. Trivex lenses are very strong. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. Another important property is that polycarbonate naturally blocks 100% UV light. That means that Trivex NXT lenses are about 10 percent thinner and a bit lighter than polycarbonate lenses. Our goal is to provide our customers with affordable, top-of-the-line prescription safety and prescription eyewear. Trivex lenses: the low-down. It has good optics, but I personally wouldn’t recommend it to someone with less than a -3.50 total power most of the time and even then probably not unless the patient specifically wanted thinner lenses or picked out a thin frame. She also tried to BS me and blame my Rx on going up which isn't true. By Joseph L. Bruneni. 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. 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. Optical clarity at the central vision point. high-index and anti-reflective coated lenses. Trivex lenses ($200 for single vision, $400 for progressives) are more scratch-resistant than either CR-39 or polycarbonate lenses. $8-$900 later I decided to educate myself on lenses and found out trivex are actually superior? The only thing that changed was the astigmatism. Polycarbonate ranks lowest based on a measure of chromatic aberration called “Abbe value,” which indicates how much light a specific material disperses. 2. Ps. 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. 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. 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. Thickness: Polycarbonate lenses have a higher index of refraction than Trivex lenses, but not by much (1.58 vs 1.53). Dr. Richard Bensinger answered. So now I'm stuck trying to figure out whether to send back for the high-index which apparently my ins. Weight: Despite having less material due to the thinner lens, polycarbonate sunglasses are heavier than their Trivex counterparts. Lenses with aspheric curves also justify higher prices. Next comes the 1.67 high-index polymer single-vision lens. 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. Hello, When you find the article helpful, feel free to share it with your friends or colleagues. High index plastic’s index ranges from. Trivex has the lowest specific gravity of any commonly used lens material. High Index vs. Aspheric Knowing what to choose isn't always easy, but this guide should help. Lenses made from Trivex cannot offer the same degree of thinness as high-index lenses. Increased because you must keep your glasses on your search: Disclaimer money and., lighter and more scratch resistant and has a higher index of refraction would need to thinner... 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