blepharitis
inflammation of the eyelids
Hordeolum (stye)
infection of the sebaceous glands of the eyelids
chalazion
infection of the meibomian (oil-secreting) gland
Keratitis
infection of the cornea
conjunctivitis
-inflammation of the conjunctiva
-acute bacterial (pink-eye)
-highly infectious
trachoma
chlamydial conjunctivitis
-leading cause of preventable blindness in the world
strabismus
deviation of one eye from the other
-double vision
nystagmus
involuntary unilateral or bilateral rhythmic movement of the eyes
paralysis of individual ocular motor muscles
limited abduction, abnormal closure of the eyelid, drooping eyelid
myopia
nearsighted - light goes in front of retina
hyperopia
farsighted - light goes behind the retina
astigmatism
unequal curvature of the cornea - mix of both
hemianopia
defective vision in one-hal of a visual field
injury of the optic chiasm
caused by atherosclerotic ischemia or external compression
-X-shaped crossing of the optic nerve
homonymous hemianopsia
complete loss of vision in the inner one-half of one eye and the outer one-half of the other eye