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. 1. 1. High-index plastic lenses. I don't necessarily need the thin lenses (the frames are relatively thick plastic ones). Trivex® lenses are impact resistant and more lightweight than standard lenses.

I asked them for the best lenses and the assistance recommended polycarbonate. User account menu. 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. 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. Press question mark to learn the rest of the keyboard shortcuts. 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. than ultra high index (1.66 and 1.74) materials. They’re more affordable than Trivex and are only moderately heavier. I have had high index a few times and, IMHO, they are no better than poly lenses in terns of the optics. Ultra-lightweight—Trivex features the lowest density, 1.11, of any optical-grade material on the market. So really $180-$250 less expensive depending on the coating. It should be noted that I didn't tell the optician my RX since I didn't have it with me. 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. If low Abbe value was truly an issue, more people would be wearing glass, with its Abbe of 58.5. A third benefit of Trivex is its relatively high abbe value. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. The lower numbers are classified as mid-index lenses. Actually, I think trivex has better optics than high index. 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 is thinner compared to other lenses but they don't have better optics. Other high-index materials are classified by numbers. Press question mark to learn the rest of the keyboard shortcuts. A color fringe may be noted around a light source or around an object. The higher the number, the thinner and lighter the lens. What type of lens would be better for my RX? This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. As for Zeiss lenses, yes they are worth their price, and also their coatings are worth their price. It can also be surfaced down to a center thickness of 1.0mm. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). In the past 20 years, in response to the demand for thinner, lighter eyeglasses, a number of lens manufacturers have introduced high-index plastic lenses. What Index Are High Index Lenses? The lenses are a high-index plastic material. Trivex High Index Lenses. Trivex hates to be rolled and polished at all, though, which is a consideration. 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. With my current glasses, which are high index, I get a lot of chromatic aberration, and I understand this has to … Archived. For the best outcome, research all high-index options before deciding which one to use. I'd ask for a 1.6 high index lens. High Index 1.61, 1.67 and 1.74 This video explains some of the differences between trivex and poly. 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 mid-index value enables lenses made from Trivex material to be thinner, lighter and more comfortable. It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). These lenses are thinner and lighter than CR-39 plastic lenses because they have a higher index of refraction (see below) and may also have a lower specific gravity. Stable surface curvatures—Trivex has high resistance to circumferential deformation. They offer comfort and clear visioneven when you wear them for a long time. As with PPG Trivex material, you can recommend PPG Tribrid lens material with confidence knowing that this new and unique high-index lens material offers similar performance benefits to Trivex material with enhanced thinness… perfect for your patients with stronger prescriptions requiring more demanding vision correction needs. Are they really worth the extra expense? Compared to polycarbonate and other high index materials with a lower abbe value, Trivex’s higher abbe will create fewer chromatic aberrations. Though in reality this is not much of an issue, since CR-39 itself is quite impact resistant. 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. Log In Sign Up. He said it would cost $550 just for the lens, which sounds expensive to me. He also recommended an anti-reflective coat ($150 for the higher end coat and $80 for the less expensive coat). Good optics are more important to me than cosmetic appeal. Though it's not guaranteed you'll even notice the difference. 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. Should I get Trivex lenses or high index lenses. This allows for a thinner lens than a CR-39 lens. It has a lower Abbe value, so there will be a lot more chromatic aberration. A high-index eyeglass lens allows people with a stronger prescription to wear a lens that is lightweight and thin. Additionally, they are lighter than both of those lenses despite only having a marginally larger index than polycarbonate. Press J to jump to the feed. However, the clarity in polycarbonate lenses is slightly less than Trivex and they tend to scratch more easily. Actually, I think trivex has better optics than high index. Either has advantages and disadvantages. Glasses become a burden if you are … Trivex lenses are, molecule for molecule: Eight percent lighter than polycarbonate; 16 percent lighter than CR-39; 19 percent lighter than high-index. Technology is evolving, and like any new material that appears, trivex lenses bring an addition to the older polycarbonate eyeglass lenses. I was taught in school you shouldn’t you trivex above -3 or so. Indexes of n d values that are ≥ 1.60 can be, often for marketing purposes, referred to as high-index. If you don't mind it a little thick and prefer function over fashion go with Trivex and save on money. 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. ABBE VALUE. Their premium coating offers 3 years of warranty normally. Refractive Index Trivex lens material has a 1.53 index of refraction. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. Debating on Trivex or high index I have an OD of -8 & OS of -7. 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. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Unless you have a pretty thick frame and pretty small, Trivex wouldn’t be too good with a -5 rx. In terms of thinness, this lens index is thinner than 1.50 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!

Join. I don't know much about Trivex - would that solve the distortion … 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. Trivex is an improvement over Polycarbonate. If you don't mind it a little thick and … Depends on what the patient wants from their glasses tbh. Trivex is not as thin as high index but it is less dense and so it ought to be less heavy. Though it's not guaranteed you'll even notice the difference. The one who wins is you. 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. Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. This ability further reduces weight and thickness. Not sure whether to go with Trivex or Polycarb. 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. Weight. Anything Below -2.00 or -.175 Diopters, Doesn’t Require High Index Lenses. Trivex is optically superior to polycarbonate and it is lighter. This test is a requirement for safety lenses. I've had patients with scripts as high as -9 that liked Trivex because of the crispness it gives. 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. 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 is able to pass the ANSI Z87.1 High Velocity Impact Test. 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. Posted by 4 years ago. Therefore, especially in high prescription powers, polycarbonate lenses will be noticeably thinner than Trivex lenses. My glasses are 1.61 high index and have fairly serious distortion at the sides. When aspheric curvatures are used on lenses, even more thickness and weight reduction can be achieved. High Index Glass: 1.70: 39: Plastic CR-39: 1.49: 58: Mid Index Plastic: 1.54: 47: Mid Index Plastic: 1.56: 36: High Index Plastic: 1.60: 36: High Index Plastic: 1.66: 32: Trivex: 1.53: 43: Polycarbonate: 1.58: 30: MR-174 1.74 32. Not sure whether to go with Trivex or Polycarb. It is thinner than trivex, and still has very good optics (better than 1.67). Trivex is a relatively new plastic lens material that is being used as a substitute for polycarbonate lenses. Trivex is not as thin as high index but it is less dense and so it ought to be less heavy. 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. 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. Therefore, consider this lens for … Be cause of its clarity, durability, ultra-lightweight properties, and resistance to chemicals, Trivex is used in production for helicopter and fighter jet canopies As a result of the success in military aircraft platforms, this high-quality material was brought to the eyewear industry in the early 2000s. Still, Trivex lenses are thinner than regular plastic eyeglass lenses, which have a refractive index of 1.50. Likewise, Trivex and other borderline normal/mid-index materials, may be referred to as mid-index. Trivex is a material developed in the 1990s originally for military use. Chromatic aberration is when white light is broken up into component colors. They are as strong, or stronger than polycarbonate for impact resistance. Close. The sales pitch of “shatterproof” is just that – a pitch. 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. They can sharpen your sight even further if you apply an anti-glare coati… Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. High index materials tend to have lower Abbe numbers. Trivex vs Polycarb. Like polycarbonate it provides 100% UV protection and it is extremely durable. On the other hand, polycarbonate lenses have a higher index of refraction than Trivex lenses (1.58 vs. 1.53). Thickness: Polycarbonate lenses have a higher index of refraction than Trivex lenses, but not by much (1.58 vs 1.53). 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. 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. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. Trivex lenses vs. Polycarbonate Eyeglass Lenses. At a -5 and without knowing specifics of frame tbh I usually use aspheric poly. Trivex has a refractive index of 1.53. PLASTIC VS. HI-INDEX LENSES. I could afford the more expensive ones but don't want to just waste money. 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. the optician recommended zeiss premium progressive high index lenses (1.67 index) for the best optics. 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). Polycarbonate is also even more shatter resistant, making it ideal for activities that have a strong risk of high impacts to your lenses. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 … 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. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. We offer a few different indexes on our lenses. ’ re more affordable than Trivex lenses are worth their price, and has... 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