1. Index 1.61 lenses are thinner than Index 1.499,1.56 lenses. Compared to Index 1.67 and 1.74, 1.61 lenses have higher abbe value and more tintability.
2. The material of MR-8 is imported from Korea, has superior performance. It can meet FDA standard, pass the falling spere test, so 1.61 lenses have igher resistance to scratches and impact.
3. High index lenses are much thinner due to their ability to bend light. As they bend light more than an ordinary lens they can be made much thinner but offer the same prescription power.
Eye damage attributed to ultraviolet light includes cataracts, pterygium and macular degeneration. Our lens material filters out 99.9% of all UV rays, including UVA and UVB, protect your eyes everytime and everywhere at 400nm.
Protecting yourself from the effect of UV rays on your eyes doesn’t mean you have to stay indoors. The best way to protect your eyes is by wearing good quality UV protection eyeglasses whenever you’re outside.
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Aspheric eyeglass lenses allow for crisper vision than standard spheric lenses, mostly when looking in other directions than the lens optical center.
Not related to the optical quality, they may give a thinner lens, and also distort he viewer's eyes less as seen by other people, producing better aesthetic appearance.