PSYC 2000 Chapter : Sight And Perception
Document Summary
The cornea and the lens help to focus the light. The retina contains special cells that transform light to nerve impulses called rods and cones. Take 20-30 minutes to fully adapt to darkness. Only detect black, white, or shades of gray. Mostly in the fovea (center of the retina where you see mostly clearly) Iris is the colored part of your eye. Two main theories (both are supported at different points in the process: opponent process theory of color vision. One color of a pair inhibits the perception of the other color: young-helmholtz trichromatic theory of color vision. Color sensors in our eyes respond to the different wavelengths (long, medium, and short) Normal vision- an image is focused on the retina. Nearsightedness (myopia)- the image is focused in front of the retina (you can see near, cannot see far) Farsightedness (hyperopia)- the image is focused behind the retina (you can see far: https://www. youtube. com/watch?v=o9bqrsahbtc, how the sun sees you .
