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
corneal light reflex
indicates if the eyes are straight (parallel alignment of the eye axes; this is the test where you shine a light in the eyes about 12 inches away; note the reflection of light on the corneas; should be in the same spot on both eyes)
Assymmetry of light indicates deviation in alignment from eye muscle weakness or paralysis
red reflex
use opthalmascope; begin 10 inches from pt at an angle of about 15 degrees; note the red glow in the pupil (shows cataracts)
opthalmic exam
looking inside eye; allows you to see the media (anterior chamber, lens, vitreous) and the ocular fundus (internal surface of the retina); darken room to dialate pupils; test shows any abnormalities
anisocoria
difference in size of pupils; if born with, normal; if new, should be assessed
cataracts
lens less transparent
glaucoma
hypertension of the eyeball; can damage retina due to pressure
leukocoria
white pupil;
myopia
vision loss; nearsighted
presbyopia
decrease in power of accomodation with agine
ptosis
eyelids droop
nystagmus
eye shakes/oscillates quickly