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17.4 Ophthalmology

Eye Conditions

TermDefinition
astigmatism defective curvature of the cornea or lens of the eye
hyperopia (hypermetropia) Farsightedness
myopia Nearsightedness
presbyopia Impairment of vision as a result of old age
cataract clouding of the lens, causing decreased vision
chalazion small, hard, cystic mass (granuloma) on the eyelid; formed as a result of chronic inflamation of a sebaceous gland (meibomian gland) along the margin of the eyelid
diabetic retinopathy retinal effects of diabetes mellitus include microaneurysms, hemorrhages, dilation of retinal veins, and neovascularization (new blood vessels form in the retina)
glaucoma increased intraocular pressure results in damage to the retina and optic nerve with loss of vision
hordeolum (stye or sty) localized, purulent, inflammatory staphylococcal infection of a sebaceous gland in the eyelid
macular degenaration progressive damage to the macula of the retina
nystagmus Repetitive rhythmmic movements of one or both eyes
retinal detachment two layers of the retina seperate from each other
strabismus abnormal deviation of the eye
Created by: vikingmedterm
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