which could make for glasses or contacts that provide a clearer view over a range of distances. The secret? Making the lens a spiral shape. The lenses in our eyes naturally focus light onto our ...

The choice of the lens shape, from an optical point of view, is clearly carefully optimized. Simulations comparing the eye's actual lens shape with other models of hypothetical crystalline lens ...

Stylish men’s glasses are about finding balance: between form and function, fashion and practicality. Think beyond the basics — choose a shape that suits your face, a material that feels comfortable, ...

Lenses were weighed immediately after removal from the eye and reweighed after experimentation ... 16 The lens and gel were contained in a specially designed L-shaped cell which allowed ...

Eyeglasses today are fashion accessories, as stylish as purses and belts. So don't fret if contact lenses bother your eyes. Instead, scope out the latest frames to give your face a fresh look.

Alternatively you can invest in a pair of glasses with "photochromic" lenses, which go dark in strong sunlight ... the salt solution is pushed down the walls of the tube and therefore bulges in the ...