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30 Cards in this Set

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  • Back
achromatopsia
severe congenital deficiency in color perception AKA complete color blindness
chalazion
small hard tumor developing on the eyelid, somewhat similar to a sebaceous cyst
conjunctivitis
inflammation of the conjunctive w/vascular congestion, producing red/pink eye; may be secondary to viral, chlamydial, bacterial, fungal infections or allergy
convergence
medial movement of the 2 eyeballs so that they are both directed at the object being viewed
diopter
meas of refractive error
neg=myopia
pos=hyperopia
ectropion
eversion or outward turning of the edge of the lower eyelid
emmetropia
norm cond of the eye in refraction in which, when the eye is at rest, parallel rays focus exactly on the retina
entropion
inversion/inward turning of the edge of the lower eyelid
epiphora
abn overflow of tears
exophthalmos
protrusion of one or both eyeballs
hordeolum
localized, circumscribed, inflammatory swelling of one of the several sebaceous glands of the eyelid, generally caused by a bacterial infection AKA sty
metamorphopsia
visual distortion of objects
nyctalopia
inability to see well in dim light AKA night blindness (cataracts, vit A deficiency, meds, hereditary)
nystagmus
invol eye movements that appear jerky and may reduce vision or be assoc w/other, more serious conditions that limit vision
papilledema
edema and hyperemia of the optic disc usually assoc with inc ocular press resulting from intracranial press
AKA choked disc
photophobia
unusual intolerance and sensitivity to light (meningitis, inflammation of eyes, measles, rubella)
presbyopia
loss of accommodation of the crystalline lens assc w/ the aging process
retinopathy
any disorder of retinal blood vessels
diabetic retinopathy
disorder that occurs in pts with diabetes and is manifested by small hemorrhages, edema, and formation of new vessels ont he retina, leading to scarring and eventual loss of vision
trachoma
chronic, contagious form of conjunctivitis common in the SW USA that typically leads to blindness
visual field
area w/in which objects may be seen when the eye is in a fixed position
anacusis
deafness AKA anacusia
(unilateral or bilateral)
conduction impairment
blocking of sound waves as they are conducted throught he external and middle ear (conduction pathway)
labyrinthitis
inflammation of the inner ear that usually results from an acute febrile process (leads to progressive vertigo)
Meniere disease
disorder of the labyrinth that leads to progressive loss of hearing (vertigo, sensorineural hearing loss, and tinnitus)
otitis externa
infection of the external auditory canal (causes: swimmer's ear, bact/fungal infections, seborrhea, eczema, allergies)
presbyacusis
impairment of hearing resultin from old age
AKA presbyacusia
irreversible
pressure-equalizing (PE)tubes
tubes inserted through the tympanic membrane, commonly to treat chronic otitis media
AKA tympanostomy tubes or ventilation tubes
(they stay in ~9mo or removed at age 5-6)
tinnitus
perception of ringing, hissing, other sounds in ears or head when no external sound is present
(blow to head, lg doses of asprin, anemia, noise exposure, stress, impacted wax, hypertension, and meds, tumors
vertigo
hallucination of movement, or feeling of spinning/dizziness
(cause:Meniere disease and labyrinthitis)