what cranial nerve test for extraocular movements?
CN III (oculomotor)
CN IV (trochlear)
Cn VI (abducens)
what cranial nerve test for visual fields?
CN II (optic)
what cranial nerve tests corneal light reflex pupillary reaction to light?
CN II (optic)
CN III (oculomotor)
How do you use the snellen chart?
client stands 20 ft from chart
evaluate both eyes seperately w/ and w/o correction
for each eye cover opposite eye
have client read smallest line of print visible
the line which 2 or fewer letters are missed is recorded as 20/20
What the first number on a visual acuity test mean? what about the number on the bottom?
the number of feet from the chart
distance at which a normal-sighted person can read the line
how do you screen for myopia? what is myopia?
screen using snellen chart
myopia= impaired far vision
how do you screen for presbyopia? what is it?
rosenbaum
impaired near vision or farsightedness
what does the ishiara test, test for?
color vision
what are you looking for with a corneal light reflex?
looking to see if the reflection of light is seen symmetrically on the corneas
what is strabismus and how do you test it?
eyes cross or go in opposite directions
cover uncover test- covering one eye you ask the client to look in a different direction. the cover is removed and both eyes should be gazing the same direction
whats nystagmus? how do you test it?
jerk or tremor like movements
six cardinal position of gaze
what is ptosis?
covering of the pupil by the upper eyelid
the conjunctiva has 2 parts: palberal and bulbar; what color should they be?