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cornea
transparent eye covering
pupil
opening for light; negative correlation with light intensity
iris
colored eye part controlling pupil size
lens
focuses light onto retina
fovea
retina indentation with cones
cones
bright-light photoreceptors; high detail, color vision
rods
low-light photoreceptors; peripheral vision, less detail
trichromatic theory
color perception via red, green, and blue cone combinations
opponent-process theory
color perception through opposing pairs: black-white, yellow-blue, red-green
afterimage
lingering visual perception after stimulus removal
depth perception
ability to perceive three-dimensional space
binocular cues
depth cues using both eyes
binocular disparity
difference in visual input between eyes
monocular cues
depth cues using one eye
linear perspective
depth perception via converging parallel lines