trivex vs high index reddit

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. Should I get Trivex lenses or high index lenses. Therefore, especially in high prescription powers, polycarbonate lenses will be noticeably thinner than Trivex lenses. 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. Press J to jump to the feed. High-index plastic lenses. 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. Here is a brief comparison of polycarbonate and Trivex lenses to help you decide which lenses might be best for you: Thickness. The lenses are a high-index plastic material. 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. The higher the number, the thinner and lighter the lens. If you don't mind it a little thick and … Indexes of n d values that are ≥ 1.60 can be, often for marketing purposes, referred to as high-index. Trivex is not as thin as high index but it is less dense and so it ought to be less heavy. Actually, I think trivex has better optics than high index. For the best outcome, research all high-index options before deciding which one to use. ABBE VALUE. On the other hand, polycarbonate lenses have a higher index of refraction than Trivex lenses (1.58 vs. 1.53). So really $180-$250 less expensive depending on the coating. Technology is evolving, and like any new material that appears, trivex lenses bring an addition to the older polycarbonate eyeglass lenses. They can sharpen your sight even further if you apply an anti-glare coati… A high-index eyeglass lens allows people with a stronger prescription to wear a lens that is lightweight and thin. Not sure whether to go with Trivex or Polycarb. 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. At a -5 and without knowing specifics of frame tbh I usually use aspheric poly. If low Abbe value was truly an issue, more people would be wearing glass, with its Abbe of 58.5. Archived. 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. Trivex® lenses are impact resistant and more lightweight than standard lenses. 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. Though it's not guaranteed you'll even notice the difference. Ultra-lightweight—Trivex features the lowest density, 1.11, of any optical-grade material on the market. This allows for a thinner lens than a CR-39 lens. Therefore, consider this lens for … The one who wins is you. It can also be surfaced down to a center thickness of 1.0mm. 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. Trivex hates to be rolled and polished at all, though, which is a consideration. 1. This test is a requirement for safety lenses. 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. Debating on Trivex or high index I have an OD of -8 & OS of -7. It should be noted that I didn't tell the optician my RX since I didn't have it with me. Though in reality this is not much of an issue, since CR-39 itself is quite impact resistant. 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. It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). He also recommended an anti-reflective coat ($150 for the higher end coat and $80 for the less expensive coat). High index is thinner compared to other lenses but they don't have better optics. 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. As for Zeiss lenses, yes they are worth their price, and also their coatings are worth their price. 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. Weight. 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. 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 plastic generally has a lower Abbe number than Trivex, meaning that Trivex is more optically clear and causes less distortion than high index plastic. I could afford the more expensive ones but don't want to just waste money. Polycarbonate is also even more shatter resistant, making it ideal for activities that have a strong risk of high impacts to your lenses. User account menu. 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. Compared to polycarbonate and other high index materials with a lower abbe value, Trivex’s higher abbe will create fewer chromatic aberrations. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. 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. Trivex has a refractive index of 1.53.

Join. Other high-index materials are classified by numbers. This ability further reduces weight and thickness. 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. 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. Depends on what the patient wants from their glasses tbh. Trivex is a relatively new plastic lens material that is being used as a substitute for polycarbonate lenses. The sales pitch of “shatterproof” is just that – a pitch. A third benefit of Trivex is its relatively high abbe value. My glasses are 1.61 high index and have fairly serious distortion at the sides. Are they really worth the extra expense? This video explains some of the differences between trivex and poly. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 … What Index Are High Index Lenses? It has better impact resistance and naturally blocks UV (granted, most good AR coatings block UV anyway). 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). They are as strong, or stronger than polycarbonate for impact resistance. He said it would cost $550 just for the lens, which sounds expensive to me. Not sure whether to go with Trivex or Polycarb. 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. Trivex High Index Lenses. than ultra high index (1.66 and 1.74) materials. What type of lens would be better for my RX? Press question mark to learn the rest of the keyboard shortcuts. Posted by 4 years ago. 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. In terms of thinness, this lens index is thinner than 1.50 lenses. High Index 1.61, 1.67 and 1.74 Press question mark to learn the rest of the keyboard shortcuts. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. It is thinner than trivex, and still has very good optics (better than 1.67). Trivex is able to pass the ANSI Z87.1 High Velocity Impact Test. 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. I have had high index a few times and, IMHO, they are no better than poly lenses in terns of the optics. Their premium coating offers 3 years of warranty normally. Trivex is optically superior to polycarbonate and it is lighter. Chromatic aberration is when white light is broken up into component colors. When aspheric curvatures are used on lenses, even more thickness and weight reduction can be achieved. Log In Sign Up. Good optics are more important to me than cosmetic appeal. 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. Likewise, Trivex and other borderline normal/mid-index materials, may be referred to as mid-index.

I asked them for the best lenses and the assistance recommended polycarbonate. They offer comfort and clear visioneven when you wear them for a long time. The lower numbers are classified as mid-index lenses. This mid-index value enables lenses made from Trivex material to be thinner, lighter and more comfortable. Close. Unless you have a pretty thick frame and pretty small, Trivex wouldn’t be too good with a -5 rx. What is the advantage to a high index lens over Trivex, besides being thinner? Anyone who wears glasses knows the difficulty of certain activities is increased because you must keep your glasses on your face while active. I was taught in school you shouldn’t you trivex above -3 or so. 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. A color fringe may be noted around a light source or around an object. PLASTIC VS. HI-INDEX LENSES. Trivex is a material developed in the 1990s originally for military use. 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. 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. It has a lower Abbe value, so there will be a lot more chromatic aberration. Either has advantages and disadvantages. We offer a few different indexes on our lenses. Though it's not guaranteed you'll even notice the difference. High index materials tend to have lower Abbe numbers. Actually, I think trivex has better optics than high index. However, the clarity in polycarbonate lenses is slightly less than Trivex and they tend to scratch more easily. Stable surface curvatures—Trivex has high resistance to circumferential deformation. 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. 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've had patients with scripts as high as -9 that liked Trivex because of the crispness it gives. 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! They’re more affordable than Trivex and are only moderately heavier. Like polycarbonate it provides 100% UV protection and it is extremely durable. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. I don't know much about Trivex - would that solve the distortion … Glasses become a burden if you are … This ensures more comfortable glasses even if your farsightedness, nearsightedness, or astigmatism prescription is high. the optician recommended zeiss premium progressive high index lenses (1.67 index) for the best optics. 1. Additionally, they are lighter than both of those lenses despite only having a marginally larger index than polycarbonate. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. I don't necessarily need the thin lenses (the frames are relatively thick plastic ones). 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. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Still, Trivex lenses are thinner than regular plastic eyeglass lenses, which have a refractive index of 1.50. Anything Below -2.00 or -.175 Diopters, Doesn’t Require High Index Lenses. Refractive Index Trivex lens material has a 1.53 index of refraction. Trivex is an improvement over Polycarbonate. Trivex lenses are, molecule for molecule: Eight percent lighter than polycarbonate; 16 percent lighter than CR-39; 19 percent lighter than high-index. Trivex is not as thin as high index but it is less dense and so it ought to be less heavy. Trivex lenses vs. Polycarbonate Eyeglass Lenses. When I got new glasses 5 years ago, I specifically asked for Trivex because it's supposed to have low chromatic aberration. With my current glasses, which are high index, I get a lot of chromatic aberration, and I understand this has to … I'd ask for a 1.6 high index lens. If you don't mind it a little thick and prefer function over fashion go with Trivex and save on money.

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