Mid index lens vs polycarbonate

with mid-index or hi-index lenses, but not polycarbonate / Trivex lenses. From what I read about polycarbonate lenses, their optical quality is not as good as CR-39 or glass. But Trivex has better abbe value than poly, in addition to having the same superior impact resistance. So my questions for those who have experieced both. What your take Other high-index materials are classified by numbers. The higher the number, the thinner and lighter the lens. The lower numbers are classified as mid-index lenses. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. Trivex is an improvement over Polycarbonate. Chromatic aberrations are higher in polycarbonate lenses. The abbe value of polycarbonate is 30, the lowest of all lens materials making it the worst lens for optical clarity and integrity. Plenty of people cannot adapt to a polycarbonate lens. For those reasons Trivex is the better choice in a mid-index lens.

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. Weight. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 percent lighter than polycarbonate lenses. with mid-index or hi-index lenses, but not polycarbonate / Trivex lenses. From what I read about polycarbonate lenses, their optical quality is not as good as CR-39 or glass. But Trivex has better abbe value than poly, in addition to having the same superior impact resistance. So my questions for those who have experieced both. What your take The higher the prescription, the higher index should be lens choices. Glasses tend to get quite thick at high correction, especially some low index (1.50) 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). Polycarbonate lens material is an impact-resistant material that has a medium index, making it somewhat less thick than standard plastic lenses but thicker than high index. If you’re debating between getting a high index lens vs aspheric lens vs polycarbonate lens material, here’s what you should know: High index lens material is best for I then selected the mid-range 1.56 index (which is close to the 1.57 of Zenni's lenses) and compared the numbers to the polycarbonate lens, which should be a 1.59 index. While I don't really know what I'm doing - it looked like the difference was about 0.2mm - which to me seems like it wouldn't be worthwhile.

Both eyeglass lens materials are light and impact-resistant. Dr. Gary Heiting Thickness. Polycarbonate has a higher index of refraction than Trivex (1.58 vs.

30 Aug 2013 The higher the prescription, the higher index should be lens choices. and is much less prone to cracking (if you use frameless lenses, polycarbonate is a good idea). A mid index 1.57 is plenty in this -2.00 diopter scenario. For those reasons Trivex is the better choice in a mid-index lens. a much higher abbe value (43-45) vs. polycarbonate (abbe value 30) making it much better in  17 Sep 2019 The Type of Lens in Your Glasses Makes Difference Before we start looking at high index versus polycarbonate lenses, it is important to note  It is a unique material that combines the advantages of CR39, Mid-Index lenses and polycarbonate, but leaves out all their inherent weaknesses. In fact it is a  High-index plastics allow for thinner lenses. due to the increase in density vs. mid- and normal index materials. shatter resistance, although not as shatter resistant as polycarbonate.

What does lens index mean? 1.50 Standard Index; 1.56 Mid-Index; 1.59 Polycarbonate; 1.61 High Index; 1.67 High Index; 1.74 High Index; What other factors 

1.57 mid index single vision lenses means that the lens is thinner than standard plastic lenses. It is not the thinnest possible, nor is it impact resistant like Trivex 1.53 mid index lenses, or with mid-index or hi-index lenses, but not polycarbonate / Trivex lenses. From what I read about polycarbonate lenses, their optical quality is not as good as CR-39 or glass. But Trivex has better abbe value than poly, in addition to having the same superior impact resistance. So my questions for those who have experieced both. What your take

Anti-Reflective Coating Bifocal Lenses Cosmetic & Specialty Tints High Index Lenses Progressive Lenses Bifocal lenses allow the wearer to look through two areas of the lens. One area It has a mid index, but it is so light that it almost floats on water! Safety glasses and most sports lenses are made of polycarbonate.

1.57 mid index single vision lenses means that the lens is thinner than standard plastic lenses. It is not the thinnest possible, nor is it impact resistant like Trivex 1.53 mid index lenses, or with mid-index or hi-index lenses, but not polycarbonate / Trivex lenses. From what I read about polycarbonate lenses, their optical quality is not as good as CR-39 or glass. But Trivex has better abbe value than poly, in addition to having the same superior impact resistance. So my questions for those who have experieced both. What your take Other high-index materials are classified by numbers. The higher the number, the thinner and lighter the lens. The lower numbers are classified as mid-index lenses. Mid-index lenses, such as 1.54, 1.56, and 1.57, are thinner than glass, and nearly as strong as CR-39. Trivex is an improvement over Polycarbonate. Chromatic aberrations are higher in polycarbonate lenses. The abbe value of polycarbonate is 30, the lowest of all lens materials making it the worst lens for optical clarity and integrity. Plenty of people cannot adapt to a polycarbonate lens. For those reasons Trivex is the better choice in a mid-index lens. 1.57 mid index single vision lenses means that the lens is thinner than standard plastic lenses. It is not the thinnest possible, nor is it impact resistant like Trivex 1.53 mid index lenses, or Polycarbonate lenses are used extensively for safety eyewear such as in your shooting glasses and has the most aberration. Keep in mind that most of us see just as well with a low ABBE VALUE lens as compared to a high ABBE VALUE lens. Crown glass is most commonly used for eyeglass lenses with an index of refraction of 1.523.

Polycarbonate lenses are impact resistant lenses and are the lens of choice for impact resistant lenses and are a lightweight, durable mid-index lens material 

Polycarbonate eyeglass lenses are a type of high-index lens that are also scratch and impact resistant and protect your eyes from UV. This material is highly  The features of the next progressive lenses, the 1.59 mid-index pure polycarbonate progressive lens, and the high-index 1.61 and 1.67 lenses, follow the same pattern as the single-vision lenses. The 1.59 progressive lens, which, like the Trivex lens, cannot be tinted (although it can be ordered as polarized, Since polycarbonate is 1.58 index, it is considered a “mid index” lens. Standard plastic lenses are around 1.48, so polycarbonate is a good, inexpensive alternative to standard plastic lenses if you do not have a very high prescription. But there is no such thing as high index polycarbonate 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. Weight. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 percent lighter than polycarbonate lenses. with mid-index or hi-index lenses, but not polycarbonate / Trivex lenses. From what I read about polycarbonate lenses, their optical quality is not as good as CR-39 or glass. But Trivex has better abbe value than poly, in addition to having the same superior impact resistance. So my questions for those who have experieced both. What your take The higher the prescription, the higher index should be lens choices. Glasses tend to get quite thick at high correction, especially some low index (1.50) 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). Polycarbonate lens material is an impact-resistant material that has a medium index, making it somewhat less thick than standard plastic lenses but thicker than high index. If you’re debating between getting a high index lens vs aspheric lens vs polycarbonate lens material, here’s what you should know: High index lens material is best for

1.56 Mid-index Plastic: Used much in the same fashion as 1.49 plastic. Polycarbonate: This is the lightest lens material available on the market (in fact 20%  From polycarbonate we move into what are considered 'Mid-Index' lenses with indexes ranging between 1.5 and 1.57 . These do not offer a great diiference in  Our high index lens options are supplied with a Hard Anti Reflection coating as Polycarbonate lenses are our preferred choice of lens for rimless glasses as it is a Our photochromic lenses are made from a mid index material, 1.56 index,