Health assessment test 2-eyes Flashcards
pupil
round, regular normally (black center portion of eye)
Iris
colored portion of eye
sclera
tough, protective, white covering
palpebral fissure
elliptical open space between the eyelids
conjunctiva
transparent protective covering on the exposed part of the eye
palpabrae conjunctiva
inside eyelid
bulbar conjuntiva
covers sclera
eye tests:
inspection of external structures
inspect pupils (are they round? normal size and shape?)
Conjuntiva (are they clear?)
Sclera (white?)
pupillary light reflex
watch for pupil to constrict x 4
look for direct and consensual response on the second
documentation: PERRL (Pupils, Equal, Round, React to Light–sometimes A is included for Accomodation)
Snellen eye chart
most common; accurate measure of vision
pt. is 20 feet from chart; shield one eye and read smallest line of letters possible
Normal visual acuity is …
20/20
Numerator indicates the…
distance the person was standing from the chart
Denominator indicates the distance…
someone with normal vision could have reaad the same lines; the bigger the denominator, the worse the person’s vision
Confrontation test
checks peripheral vision (macular degeneration)
position at eye level about 2 feet away; pt. covers one eye as I micmic; slowly advance a finger from the periphery in several directions; ask pt to say now as target is first seen (periphery field loss, glaucoma in older pts.)
extraocular muscles test
cat whisker test
Are there any pausies or weakness? Note any nystagmus (fine, oscillating movement best seen in iris)
This shows if there is deviation in alignment from the eye muscle weakness or paralysis