Eye: Diagnostic & Symptomatic Terms Flashcards
(44 cards)
eye strain
asthenopia
involuntary contraction of the muscles surrounding the eye, causing uncontrolled blinking and lid squeezing
blepharospasm
double vision
diplopia
abnormal protrusion of one or both eyeballs
exophthalmos
secretion of tears
lacrimation
involuntary, rapid oscillating movement of the eyeball
nystagmus
extreme sensitivity to, and discomfort from, light
photophobia
blind spot in vision
scotoma
defects in the bending of light as it enters the eye, causing an improper focus in the retina
refractive errors
distorted vision caused by an oblong or cylindrical curvature of the lens or cornea that prevents light rays from coming to a single focus on the retina
astigmatism
farsightedness; difficulty seeing close objects when light rays extend beyond the proper focus on the retina
hyperopia
nearsightedness; difficult seeing distant objects when light rays fall short of the proper focus on the retina
myopia
impaired vision owing to old age loss of accommodation
presbyopia
ability of the eye to adjust focus on near objects
accommodation
decreased vision in early life due to a functional defect that can occur as a result of strabismus, refractive errors or trauma; usually occurs in one eye, also know as lazy eye
ambylopia
absence of the lens, usually after cataract extraction
aphakia
inflammation of the eyelid
blepharitis
baggy eyelid; overabundance and loss of elasticity of skin on the upper eyelid, causing a fold of skin to hang down over the edge of the eyelid when the eyes are open
blepharochalasis
baggy eyelid; overabundance and loss of elasticity of skin on the upper eyelid, causing a fold of skin to hang down over the edge of the eyelid when the eyes are open
dermatochalasis
drooping of the eyelid usually caused by paralysis (aka ptosis)
blepharoptosis
chronic modular inflammation of a meibomian gland, usually the result of a blocked duct; commonly presents as a swelling of the upper or lower eyelid
chalazion
opaque clouding of the lens causing decreased vision
cataract
pinkeye; inflammation of the conjunctiva
conjunctivitis
inflammation of the lacrimal gland
dacryoadenitis