You may want to consider Transitions photochromic lenses for your primary pair of glasses. They adjust automatically to changing light conditions to allow just the right amount of light to reach the ...

Through natural selection, different types of eyes have emerged in evolutionary ... the layer of cells and pigment at the back of the human eye. Over time a lens formed at the front of the eye.

Once an IOL is placed in your eye, it can't be changed without additional surgery. What types of intraocular lenses (IOLs) ...

Instead of a concave lens near the eye, Kepler used a convex lens ... Standing on shoulders Both types of telescopes—Galileo's refractor and Newton's reflector—underwent improvements in ...

» Which part of the eye does cataract affect? There are three predominant forms of cataract depending on their anatomical location in the eye lens: cortical, nuclear and posterior sub-capsular (PSC).

Capping ten years of work to stem the tide of nearsightedness, David Berntsen, Golden-Golden Professor of Optometry and chair ...