Vision problems Flashcards
cataract
cloudy lens, scatters light
painless, blurry vision
is cataracts a gradual or sudden onset?
gradual onset
if cataracts are left untreated?
blindness
risk factors of cataracts
older age
eye trauma
congenital risk
Diabetes
Corticosteroid use
Smoking, alcohol consumption
S/Sx cataracts
painless
Unilateral or bilateral
Blurry vision, halo around lights
Altered color perceptions
glare issues at night
Decreased accommodation
Treatment for cataracts
Surgery
Diabetic retinopathy
Increases over the age of 40 with diabetes
Nonproliferative diabetic retinopathy
capillary micro-aneurysms
retinal swelling
Hard exudate
Macular, edema; plasma leaks from macular blood vessels
Capillaries rupture, dot or blot hemorrhaging
proliferative diabetic retinopathy
Advanced retinopathy
New blood vessels are fragile and leaky
Hypertensive retinopathy cause
increased blood pressure
Blockages in retinal blood vessels
Initially, no vision change
Severe hypotension can lead to?
Sudden vision loss, due to swelling of optic disc and nerve
Treatment for hypertension retinopathy
treat and control the disease
Follow up with retinologist more frequently
Normal vision restored with hypertension treatment
retinal detachment
Retina has tear or leak
Vitreous humor, fluid followers behind the retina
risk factors for retinal detachment
Usually spontaneous
More likely in people with myopia (can’t see far)
Over 40 years old
Trauma to the head
eye tumors
History/complication of cataract surgery
S/Sx retinal detachment
Sudden
Unilateral vision loss
Painless
May see floaters
Flashes of light
Macular degeneration
Most common cause of irreversible vision loss in people over 60 in the US
Dry (non-exudative)
Most common, 90%
Yellow deposits, in retinal pigment epithelium
Wet (exudative)
less common, only 10%
Growth of New blood vessels in an abnormal location of retina