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severe congenital deficiency in color perception, also called complete color blindness
achromatopsia
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medial movement of the 2 eyeballs so that they are both directed at the object being viewed
convergence
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measurement of refractive error
diopter
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outward-turning of the edge of the lower eyelid
ectropion
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normal eye--parallel rays focus exactly on the retina
emmetropia
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inward-turning of the edge of the lower eyelid
entropion
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abnormal overflow of tears
epiphora
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protrusion of one or both eyeballs
exophthalmos
-
sty(e) (localized inflammatory swelling of a sebaceous gland of the eyelid, generally caused by bacterial infection
hordeolum
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visual distortion of objects
metamorphopsia
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inability to see well in dim light, aka night blindness
nyctalopia
-
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edema and hyperemia of the optic disk, aka choked disc
papilledema
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decreased ability to focus, due to aging (loss of accommodation)
presbyopia
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chronic contagious form of conjunctivitis
trachoma
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blocking of sound waves as they are conducted through the external and middle ear (conduction pathway)
conduction impairment
-
inflammation of the inner ear, usually from fever
labyrinthitis
-
disorder of the labyrinth that leads to progressive hearing loss. also vertigo and tinnitus
Meniere
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impairment of hearing due to aging
presbyacusis
-
PE tubes are also called
pressure equalizing tubes, aka tympanostomy tubes, ventilation tubes
-
hallucination of movement (!), or a feeling of spinning or dizziness
vertigo
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