Lecture 4. The Visual System I-II Structure, Function and Dysfunction

Objectives To gain an understanding of: • The organization of the receptor organ • The control of pupillary size and the effect of lesions • The lens system and refractive errors • The concept of visual field and its dimensions • How does the processing of visual information start at the retinal receptors • How is it transformed within the retinal networks • The end result of delivering parallel channels of information processing to the brain