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eye
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iris
alter size of pupil so can see objects near or far
pupil
large in low small small in bright light
cornea
transparent layer that protect the eye; refract light
lens
transparent disc that adjusts in siz- bends light so it hits fovea in back of retina
ciliary muscles
sphincter muscles attached to iris that have ciliary fibers attached to lens. control thickness of lens
______ acts like a reflex but can also be consciously controlled
accomodation
accomodation
change focal length of lens by changing curvature of eye lens
sclera
white of eye
choroid
blood supply to eye
retina
light sensitive rods and cones
cones-register color
rods- black and white
fovea
densely packed rods and cones
optic nerve
part of brain; blind spot
fovea
contains more rods than cones
light must hit fovea for full acuity
sensitive to detail
projects to rest of retina and bain
myopia
inability to see far onjects clearly
hyperopia
inability to see near object clearly
Author
Naheer
ID
117589
Card Set
eye
Description
parts of eye
Updated
11/18/2011, 1:03:15 AM
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