HEENT Flashcards
what areas of vision decline with age
contrast sensitivity, glare sensitivity and performance under reduce illumination
What is the definition of vison imparement
20/40 or worse
what is definition of leagal blindness
20/200
Leading cause of vision loss
Macular degeneration
symptom of mac degen
unilateral central vision loss becoming bilateral
Who is more prone to mac degen
smokers, htn, stheroscleoris, phototoxiity, inflamation, diet and genetics
How doese open glaucoma present
loss of periferal vision first then central vision
what are cataracts
lense opacity
How do cataracts reduce vision
degrade blue-yellow colour vision, reduce contrast sensitivity, increase glare,
risk factors for cataracts
sunlight, smoking, heavy etoh,
How is glaucoma measured
IOP
What is the management for open glaucoma
bet-blockers = 1st line
Whats the first noticible sign of hearing loss
hearing loss for speach, and tones
anatomic effects of hearing loss
atrophy of sensory cells in innner early, calcification of inner ear membrane, degeneration of 8th CN fibers, reduces cells in auditory cortex
Risks of hearing loss
noise exposure, middle ear disease, vacular disease
