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15 Cards in this Set

  • Front
  • Back
Sclera
the white of the eye, a tough membrane which protects the eye from injury
cornea
the front of the sclera which focuses the light into the eye
iris
a donut shaped band of muscles behind the cornea, regulates the amount of light that enters the eye by enlarging or compacting the pupil
psychological factors and the eye
emotions such as arousal and pain cause pupils to dialate
retina
the light sensative inner part of the membrane
accommodation
the process by which the lense increases or decreases curvature
myopia
nearsightedness
hyperopia
farsightedness
choroid
blood vescles in the eye
rods
120 million, night vision, periferal vision
cones
6 million, color and detailed vision
Fovea
section of the eye that contains only cones
most common type of color blindness
red-green
blind spot
the area that contains no rods or cones
receptor field
the area of the retina that feeds input into the ganglion cell