trivex vs high index reddit

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. They can sharpen your sight even further if you apply an anti-glare coati… Likewise, Trivex and other borderline normal/mid-index materials, may be referred to as mid-index. Still, Trivex lenses are thinner than regular plastic eyeglass lenses, which have a refractive index of 1.50. Trivex is a material developed in the 1990s originally for military use. I've had patients with scripts as high as -9 that liked Trivex because of the crispness it gives. 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. What Index Are High Index Lenses?

Join. Anything Below -2.00 or -.175 Diopters, Doesn’t Require High Index Lenses. He said it would cost $550 just for the lens, which sounds expensive to me. Stable surface curvatures—Trivex has high resistance to circumferential deformation. 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 not as thin as high index but it is less dense and so it ought to be less heavy. At a -5 and without knowing specifics of frame tbh I usually use aspheric poly. Technology is evolving, and like any new material that appears, trivex lenses bring an addition to the older polycarbonate eyeglass 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. I don't know much about Trivex - would that solve the distortion … They’re more affordable than Trivex and are only moderately heavier. This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. Therefore, consider this lens for … Chromatic aberration is when white light is broken up into component colors. If you don't mind it a little thick and … Should I get Trivex lenses or high index lenses. Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. Trivex has a refractive index of 1.53. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. 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. 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. Actually, I think trivex has better optics than high index. Trivex is not as thin as high index but it is less dense and so it ought to be less heavy. What type of lens would be better for my RX?

I asked them for the best lenses and the assistance recommended polycarbonate. I'd ask for a 1.6 high index lens. Trivex lenses vs. Polycarbonate Eyeglass Lenses. Unless you have a pretty thick frame and pretty small, Trivex wouldn’t be too good with a -5 rx. the optician recommended zeiss premium progressive high index lenses (1.67 index) for the best optics. Good optics are more important to me than cosmetic appeal. Trivex High Index Lenses. 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. It should be noted that I didn't tell the optician my RX since I didn't have it with me. Posted by 4 years ago. 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. Press question mark to learn the rest of the keyboard shortcuts. Not sure whether to go with Trivex or Polycarb. User account menu. 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. Press J to jump to the feed. Though in reality this is not much of an issue, since CR-39 itself is quite impact resistant. Trivex is an improvement over Polycarbonate. Other high-index materials are classified by numbers. It can also be surfaced down to a center thickness of 1.0mm. Either has advantages and disadvantages. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Trivex is a relatively new plastic lens material that is being used as a substitute for polycarbonate lenses. It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). Archived. Trivex lenses are, molecule for molecule: Eight percent lighter than polycarbonate; 16 percent lighter than CR-39; 19 percent lighter than high-index. It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. High-index plastic lenses. 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. We offer a few different indexes on our lenses. As for Zeiss lenses, yes they are worth their price, and also their coatings are worth their price. ABBE VALUE. Weight. 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. The one who wins is you. This test is a requirement for safety lenses. 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. If you don't mind it a little thick and prefer function over fashion go with Trivex and save on money. High index is thinner compared to other lenses but they don't have better optics. 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. Indexes of n d values that are ≥ 1.60 can be, often for marketing purposes, referred to as high-index. 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. Log In Sign Up. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 … They are as strong, or stronger than polycarbonate for impact resistance. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. I was taught in school you shouldn’t you trivex above -3 or so. Thickness: Polycarbonate lenses have a higher index of refraction than Trivex lenses, but not by much (1.58 vs 1.53). The lenses are a high-index plastic material. My glasses are 1.61 high index and have fairly serious distortion at the sides. 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. 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. On the other hand, polycarbonate lenses have a higher index of refraction than Trivex lenses (1.58 vs. 1.53). Ultra-lightweight—Trivex features the lowest density, 1.11, of any optical-grade material on the market. With my current glasses, which are high index, I get a lot of chromatic aberration, and I understand this has to … PLASTIC VS. HI-INDEX LENSES. 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. than ultra high index (1.66 and 1.74) materials. He also recommended an anti-reflective coat ($150 for the higher end coat and $80 for the less expensive coat). Not sure whether to go with Trivex or Polycarb. This video explains some of the differences between trivex and poly. For the best outcome, research all high-index options before deciding which one to use. So really $180-$250 less expensive depending on the coating. Their premium coating offers 3 years of warranty normally. 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. 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! 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. When aspheric curvatures are used on lenses, even more thickness and weight reduction can be achieved. Refractive Index Trivex lens material has a 1.53 index of refraction. Though it's not guaranteed you'll even notice the difference. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. In terms of thinness, this lens index is thinner than 1.50 lenses. The higher the number, the thinner and lighter the lens. 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. 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 hates to be rolled and polished at all, though, which is a consideration. The lower numbers are classified as mid-index lenses. This allows for a thinner lens than a CR-39 lens. Actually, I think trivex has better optics than high index. 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. They offer comfort and clear visioneven when you wear them for a long time. Debating on Trivex or high index I have an OD of -8 & OS of -7. Though it's not guaranteed you'll even notice the difference. 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. Are they really worth the extra expense? Trivex is able to pass the ANSI Z87.1 High Velocity Impact Test. Close. Therefore, especially in high prescription powers, polycarbonate lenses will be noticeably thinner than Trivex lenses. 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 ability further reduces weight and thickness. 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. 1. However, the clarity in polycarbonate lenses is slightly less than Trivex and they tend to scratch more easily. 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. Trivex is optically superior to polycarbonate and it is lighter. Like polycarbonate it provides 100% UV protection and it is extremely durable. Compared to polycarbonate and other high index materials with a lower abbe value, Trivex’s higher abbe will create fewer chromatic aberrations. The sales pitch of “shatterproof” is just that – a pitch. 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. 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. 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. Glasses become a burden if you are … Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. A third benefit of Trivex is its relatively high abbe value. I could afford the more expensive ones but don't want to just waste money. Press question mark to learn the rest of the keyboard shortcuts. 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 vs Polycarb. 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. 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Anything Below -2.00 or -.175 Diopters, Doesn ’ t Require high index lens over,. Or so the less expensive coat ) larger index than polycarbonate, making Trivex lenses % lighter lenses from.

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