CH: 15 Eyes Flashcards
(37 cards)
which nerve direct eye outward?
CN VI
which nerve directs eye inward and down?
CN IV
which nerve directs eye all other ways?
CN III
what is corneal blink reflex
blinking if something touches eye
what does six cardinal gazes test for
nystagmus
*repetitive uncontrolled movements
pupillary light reflex
normal constriction when bright light shines on retina
direct eye reflex
shine in eye and it constricts
consensual eye reflex
shine in one eye and look in other eye
fixation
eye directs toward object
accommodation
adaptation for near vision
*look far then focus on something close and eyes will constrict
strabismus
cross eyed
diplopia
double vision
glaucoma
increased intraocular pressure
*lose peripheral vision
cataracts
clouding of lens
macular degeneration
nerve degenerates
*central vision loss
presbyopia
loss of near vision due to loss of elasticity
anisocoria
unequal pupils
whats the cornea
clear outer layer front of eye
*check smoothness and clarity
whats the lens
located behind the iris
*check clarity
whats the iris
colored portion of eye
*flat round evenly colored
what are pupils
black opening inside iris
*note size shape and equality
what does the macula do
receives and transduces light
what is the fovea centralis
area of sharpest vision
myopia
nearsighted
*need (-) diopter
