INTER-LS 101 Lecture Notes - Lecture 33: Monochromacy, Trichromacy, Retinopathy

• School: UW-Madison
• Department: Interdisciplinary Courses
• Course: INTER-LS 101
• Professor: Bikash Pattnaik

Document Summary

Biology of vision - lecture 33 - inheritance of eye diseases (11/28/16) We only see cornea, iris, pupil -- there is more eye behind that. Retina contains 2 types of light detecting cells: Rods - sees shades of gray and detects light, mostly in peripheral vision. Cones - sees colors, condensed at fovea. 3 types of cones differing on type of opsin made and the wavelength it detects: Gene for red-green color blindness is inherited. The x chromosome is the linkage for the inheritance. Cones active in daylight and provide color vision. All 3 cones are used but one is weaker. Only 2 out of 3 cones properly work. Thinning or retina indicating loss of rods. Loss of functional vision or total blindness can be end result. Tumor grow in visual axis and be visible as whitish masses in pupil (leukocoria) Happens in children age 4 or less.