The intricacy and seeming perfection of the eye, both as an object of anatomical beauty and as a working machine, have worried and intrigued scientists, philosophers and zealots, especially during the ...

Your eye is a slightly asymmetrical globe, about an inch in diameter. The front part (what you see in the mirror) includes: Just behind the iris and pupil lies the lens, which helps focus light on the ...

A complex system of nerves and muscles enables the human eye to blink, gaze, and shift focus. The trochlear nerve is one of six cranial nerves that carry electrical impulses from the brain to the eye.

THIS little book, according to its preface, has been written for students in optics, and the author guarantees the precision of the facts therein contained on the ground that Mr. Lindsay Johnson has ...