have they improved??
2006-12-16 06:16:35 · 4 answers · asked by Anonymous in Beauty & Style ➔ Fashion & Accessories
They are continually improving.
The higher the refractive index, the thinner the lens for a given prescription, every thing else being equal.
A 1.9 index lens is approximately 75% thinner than one of 1.5. My prescription gets up to -14.00, so I'm well aware of the latest in lens technology (Apart from me being an optometrist)
There are penalties for using high index thinner lenses, not least the cost. The thinnest lenses are in glass, which does not have the weight and safety advantages of plasic (I wear 1.8 and 1.9 glass lenses) The higher index lenses also present more colour fringes through the periphery (chromatic aberration)
The other things that help with thickness:
Pick the smallest frame *that you like and suits you*.
More rounded shapes are better with high prescriptions, especially with long-sighter (+ve) ones where the lenses can be made thinner to an individual frame shape and size.
Best summary I've found on-line is at:
(I have no connection with the company)
2006-12-16 06:50:14 · answer #1 · answered by Pedestal 42 7 · 0⤊ 0⤋
75% of glasses today are made from plastic, but, lenses made from polycarbonate can be almost as thin as those made from high-index plastic--and polycarbonate, used in police visors and space helmets, is practically bullet-proof. It scratches rather easily, but anti-scratch coatings are available.
2006-12-16 06:22:49 · answer #2 · answered by jebrli 2 · 0⤊ 0⤋
lol! have they improved! they came a long ways from cat wear to cool wear! so yes they have improved so the answer is yes
2006-12-16 06:20:00 · answer #3 · answered by fishyinmytank 3 · 0⤊ 0⤋
heck yes. you can get laser surgery too so that you dont have to wear thick glasses anymore. Lasik. I got it, no more chunkie glasses for me.
2006-12-16 06:19:07 · answer #4 · answered by fireeyedmaiden 3 · 0⤊ 0⤋