The backbone of the book consists of the 16 chapters on eye anatomy and physiology, but these are leavened by a variety of devices to inform us of the eye's evolution, development and intellectual ...

Difficult, but not impossible. Scientists have come up with scenarios through which the first eye-like structure, a light-sensitive pigmented spot on the skin, could have gone through changes and ...

MIT engineers developed a method to grow artificial muscle tissue that twitches and flexes in multiple, coordinated ...

The retina is an extremely complex structure. It's made up of at least ... Whatever light is not absorbed on this return trip passes out of the eye the same way it came in—through the pupil.

Structure Coloured part of the eye that contains muscles. These relax or contract to adjust the size of the pupil. Function Controls how much light enters the pupil. Structure Transparent ...