If your glasses were manufactured from an increased index material it will probably be liked as something like “Hi-Index/1.67” or “Hi-Index/1.74”. In the event that you got polycarbonate and you also had a higher index material previously this may be the key reason why everything doesn’t seem as superior. It isn’t unusual for 1.67 high-index lenses and 1.74 high-index lenses to cost 3x to 4x the cost of standard plastic or glass lenses. High-index lenses are especially helpful when you have a strong eyeglass prescription for nearsightedness, farsightedness or astigmatism. The difference high-index lenses make in turning thick glasses to thin glasses could be very dramatic should you have a strong prescription.
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- Through the elimination of surface reflections, anti-reflective coating also makes your lenses nearly invisible.
- Using film that’s slowed up and viewed frame by frame, one investigation demonstrated a fast-moving ball getting into connection with a plastic lens broke the lens and impacted the attention.
Your visitors are wanting better looking lenses so ensure you are offering them what they’re looking for. High index lenses provide a thinner lens but will often have lower abbe values. The Abbe value determines to a big part the optical integrity of the lens. Ordering hi-index will dramatically reduce lens thickness and the entire weight of your eyewear. These lenses will be the thinnest and recommended if you have a strong prescription which range from +3.00 to -7.00 or higher, and astigmatism correction powers over -4.00. Polycarbonate is also extremely impact-resistant and for that reason always recommended for children and all types of safety glasses. Even though the lens is quite impact-resistant, the material itself is pretty soft and is susceptible to scratching.
Bottomline Benefits: Polycarbonate Vs High Index Lenses
Plastic lenses don’t have inbuilt protection against harmful ultraviolet rays, unlike polycarbonate lenses that have inherent UV protection. Lenses in this index are created out of a particular polycarbonate material. Because not only are they durable and impact-resistant, they’re also scratch-resistant and will protect your eyes from harmful Ultra violet rays. Also, remember that OTC reading glasses should only be utilized with a lens magnification of +3.00 or less. Anything stronger and we recommend visiting your eye doctor to get their recommendation before purchasing. Up to 50% lighter & thinner standard CR-39 lenses of
This article reviews the various lens material options for glasses. You can use these details to decide which eyeglasses lens material type is right for you personally. 1.67 and 1.74 index lenses will undoubtedly be 35%-50% thinner than standard plastic.
Trivex Eyeglass Lenses: Tough And Lightweight
These lenses supply you with a durable and impact-resistant lens that’s ideal for anyone, but particularly if you are an active individual. Have a look at the video below to listen to a conclusion of what polycarbonate lenses are by FramesDirect. Today polycarbonate is the standard lens material for most online eyeglass retailers, and they are standard in all children’s glasses, safety glasses, and sports goggles. Polycarbonate lenses get yourself a large amount of press because they’re ideal for several specific uses, but let’s not discount the value of sleek, slender, and clear 1.67’s.
High-index plastic lenses correct all types of refractive errors, including myopia , hyperopia , and astigmatism. They are available as single vision lenses, or perhaps a reading prescription that corrects presbyopia (age-related farsightedness) can also be added, such as in a bifocal or progressive lens.
Abbe value—This is really a way of measuring a material’s tendency to disperse visible light into its component colors. The impact of this value can be a element in blurred vision in the peripheral regions of a lens. Not standard ultimate in thin, with aspheric design and AR this lens offers outstanding optics and the very best cosmetics in the industry.
This then helps it be crucial for you to make the proper decision or risk ending up having an ineffective item. There is hardly any to dislike about high index lenses, but there are two key drawbacks that can’t be ignored. My wife and I use eyewear but to be honest we are unaware you can find so much things we must know. Through your post I learned about Index of Refraction and high-index which is very helpful. Polycarbonate lenses have had an extended history of usage in other industries such as for the cockpits in fighter planes, space shuttle windshields, and astronaut helmet visors.