than ultra high index (1.66 and 1.74) materials. Trivex is not as thin as high index but it is less dense and so it ought to be less heavy. Press question mark to learn the rest of the keyboard shortcuts. Other high-index materials are classified by numbers. So really $180-$250 less expensive depending on the coating. Though it's not guaranteed you'll even notice the difference. Trivex lenses are, molecule for molecule: Eight percent lighter than polycarbonate; 16 percent lighter than CR-39; 19 percent lighter than high-index. Their premium coating offers 3 years of warranty normally. If you don't mind it a little thick and … In terms of thinness, this lens index is thinner than 1.50 lenses. Archived. Not sure whether to go with Trivex or Polycarb. I don't think there is a wrong option, but if you have to have your lenses as thin as possible go with high index. However, if your prescription exceeds -/+6.00, you should consider a high index 1.67 lens or Varilux Physio Trivex lens in order to minimize lens weight and thickness. Weight. Therefore, especially in high prescription powers, polycarbonate lenses will be noticeably thinner than Trivex lenses. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. Should I get Trivex lenses or high index lenses. Therefore, consider this lens for … At a -5 and without knowing specifics of frame tbh I usually use aspheric poly. This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. The less expensive option he said I could also do would be zeiss trivex, which would cost $450 for the lens and he said doesn't necessarily need an antireflective coat. With my current glasses, which are high index, I get a lot of chromatic aberration, and I understand this has to … Trivex is an improvement over Polycarbonate. Press question mark to learn the rest of the keyboard shortcuts. 1. Polycarbonate is also even more shatter resistant, making it ideal for activities that have a strong risk of high impacts to your lenses. Trivex is optically superior to polycarbonate and it is lighter. 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. The one who wins is you. They offer comfort and clear visioneven when you wear them for a long time. Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. 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. Not sure whether to go with Trivex or Polycarb. Indexes of n d values that are ≥ 1.60 can be, often for marketing purposes, referred to as high-index. What Index Are High Index Lenses? High-index plastic lenses. Trivex will be thicker than poly or high index north of a +/-5 (I sit at a -375OU and trivex is what cuts out thinnest for me) but it will still have excellent clarity. Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. I have had high index a few times and, IMHO, they are no better than poly lenses in terns of the optics. It should be noted that I didn't tell the optician my RX since I didn't have it with me. Trivex is able to pass the ANSI Z87.1 High Velocity Impact Test. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. It has a lower Abbe value, so there will be a lot more chromatic aberration. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. The majority of high-index materials have a lower Abbe value, however, meaning that dispersion—when white light is separated into its color components—may be a problem. My prescription is -5 sphere -0.50 cylinder axis 104 add +1.25 OD and sphere -5 cylinder 0 axis 0 add +1.25 OS. The sales pitch of “shatterproof” is just that – a pitch. They’re more affordable than Trivex and are only moderately heavier. Anything Below -2.00 or -.175 Diopters, Doesn’t Require High Index Lenses. I have Been wearing strong glasses for almost 50 years now so 'coke bottle' lenses do not bother me as long as my vision is crisp and clear! Compared to polycarbonate and other high index materials with a lower abbe value, Trivex’s higher abbe will create fewer chromatic aberrations. A long time ago I got glasses from Lenscrafters and I'm pretty sure the lenses were polycarbonate because I noticed a lot of chromatic aberration. This lower specific gravity in mid range prescriptions, such as +/-3.00D to +/-6.00D could create a lighter weight lens than by using a more expensive higher index material. All Crystal Vision Lenses are made in the U.S., to exacting specifications, in an Essilor laboratory, and we are able to offer them at a great price point. I've had patients with scripts as high as -9 that liked Trivex because of the crispness it gives. It can also be surfaced down to a center thickness of 1.0mm. I could afford the more expensive ones but don't want to just waste money. Like polycarbonate it provides 100% UV protection and it is extremely durable. My RX is -4.25 sphere -0.50 cylinder 176 axis for the right, and -4.75 sphere -0.25 cylinder 4 axis for the left. Thickness: Polycarbonate lenses have a higher index of refraction than Trivex lenses, but not by much (1.58 vs 1.53). This ability further reduces weight and thickness. Trivex has a refractive index of 1.53. 1. Either has advantages and disadvantages. Actually, I think trivex has better optics than high index. Ultra-lightweight—Trivex features the lowest density, 1.11, of any optical-grade material on the market. High index is thinner compared to other lenses but they don't have better optics. Never had a complaint from a patient about weight, and I find that it usually cuts out to be about the same as 1.67 in terms of thickness. It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). Technology is evolving, and like any new material that appears, trivex lenses bring an addition to the older polycarbonate eyeglass lenses. User account menu. PLASTIC VS. HI-INDEX LENSES. 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. Likewise, Trivex and other borderline normal/mid-index materials, may be referred to as mid-index. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Depends on what the patient wants from their glasses tbh. It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). I was taught in school you shouldn’t you trivex above -3 or so. Press J to jump to the feed. Posted by 4 years ago. This test is a requirement for safety lenses. Glasses become a burden if you are … They can sharpen your sight even further if you apply an anti-glare coati… Debating on Trivex or high index I have an OD of -8 & OS of -7. Trivex High Index Lenses. Though it's not guaranteed you'll even notice the difference. I don't know much about Trivex - would that solve the distortion … Trivex is a material developed in the 1990s originally for military use. When aspheric curvatures are used on lenses, even more thickness and weight reduction can be achieved. For the best outcome, research all high-index options before deciding which one to use. A high-index eyeglass lens allows people with a stronger prescription to wear a lens that is lightweight and thin. Trivex is a relatively new plastic lens material that is being used as a substitute for polycarbonate lenses. We offer a few different indexes on our lenses. Chromatic aberration is when white light is broken up into component colors. Trivex lenses vs. Polycarbonate Eyeglass Lenses. A third benefit of Trivex is its relatively high abbe value. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. ABBE VALUE. I know the optical clarity is better in trivex, but I'm concered about the thickness it will have … Press J to jump to the feed. High Index 1.61, 1.67 and 1.74 I don't necessarily need the thin lenses (the frames are relatively thick plastic ones). Refractive Index Trivex lens material has a 1.53 index of refraction. I don't think there is a wrong option, but if you have to have your lenses as thin as possible go with high index. Hi-index lens material reduces lens thickness, making these lenses more comfortable and better looking by minimizing the size of visible lens edges for nearsighted wearers and reducing the magnified “bug eye” appearance associated with farsighted wearers. Additionally, they are lighter than both of those lenses despite only having a marginally larger index than polycarbonate. On the other hand, polycarbonate lenses have a higher index of refraction than Trivex lenses (1.58 vs. 1.53). Close.

Join. If low Abbe value was truly an issue, more people would be wearing glass, with its Abbe of 58.5. 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). Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 … As for Zeiss lenses, yes they are worth their price, and also their coatings are worth their price. My glasses are 1.61 high index and have fairly serious distortion at the sides. Stable surface curvatures—Trivex has high resistance to circumferential deformation. The lower numbers are classified as mid-index lenses. High index materials tend to have lower Abbe numbers. The higher the number, the thinner and lighter the lens. 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. He also recommended an anti-reflective coat ($150 for the higher end coat and $80 for the less expensive coat). It is thinner than trivex, and still has very good optics (better than 1.67). This mid-index value enables lenses made from Trivex material to be thinner, lighter and more comfortable. 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. Are they really worth the extra expense? Trivex hates to be rolled and polished at all, though, which is a consideration. Though in reality this is not much of an issue, since CR-39 itself is quite impact resistant. This video explains some of the differences between trivex and poly. the optician recommended zeiss premium progressive high index lenses (1.67 index) for the best optics. Trivex vs Polycarb. I'm getting my first set of progressive lenses, and the optician recommended zeiss premium progressive high index lenses (1.67 index) for the best optics.

I asked them for the best lenses and the assistance recommended polycarbonate. This allows for a thinner lens than a CR-39 lens. The lenses are a high-index plastic material. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. What is the advantage to a high index lens over Trivex, besides being thinner? Mid-index: 1.54 ≤ n d < 1.60; High-index: 1.60 ≤ n d < 1.74; Very high index: 1.76 ≤ n d; This is a general classification. Trivex® lenses are impact resistant and more lightweight than standard lenses. Still, Trivex lenses are thinner than regular plastic eyeglass lenses, which have a refractive index of 1.50. A color fringe may be noted around a light source or around an object. 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.

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