Vision: Histophysiology of the Eye - Research Article from World of Anatomy and Physiology

This encyclopedia article consists of approximately 2 pages of information about Vision.

Vision: Histophysiology of the Eye - Research Article from World of Anatomy and Physiology

This encyclopedia article consists of approximately 2 pages of information about Vision.
This section contains 562 words
(approx. 2 pages at 300 words per page)
Buy the Vision: Histophysiology of the Eye Encyclopedia Article

Histophysiology refers to the collective functioning of cells and tissues. In the case of the eye, these cells and tissues function in vision.

The human eye is sensitive to light having wavelengths between 397 and 723 nanometers (a nanometer is 10-9 meters). The light entering the eye is focused by a lens to produce an image. The image is projected onto the back surface of the eye, a region called the retina. Here, specialized cells known as rods convert the light signal into an electrical signal. Chemically, this is accomplished by the bleaching out by the light of a rod protein called rhodopsin. Rods are important in lower-light vision, where color and detail are not as prominent. Color vision and the addition of visual detail is the concern of other specialized cells in the retina, which are known as cones. A trio...

(read more)

This section contains 562 words
(approx. 2 pages at 300 words per page)
Buy the Vision: Histophysiology of the Eye Encyclopedia Article
Copyrights
Gale
Vision: Histophysiology of the Eye from Gale. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.