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Nervous System Terms

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Term
Definition
astigmatism   abnormally shaped cornea causing light rays to be focused irregularly on the retina  
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blepharitis   inflammation of the eyelids  
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blepharoptosis   drooping of the eyelid  
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cataract   progressive cloudiness of the crystalline lens  
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chalazion   cyst or nodule on the eyelid as a result of an obstructed meibomian gland  
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color blindness   inability to recognize or see certain colors  
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conjunctivitis   inflammation of the conjunctiva ; pinkeye  
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dacryocystitis   inflammation of the tear sac  
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detached retina   separation of the retina from the choroid layer of the eye  
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diabetic retinopathy   disease of the retina and its capillaries caused by long-standing and usually poor controlled diabetis mellitus  
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diplopia   double vision; one or both eyes  
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ectropion   turning outward of the eyelash margins, usually affects the lower eyelid  
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entropion   turning inward of the eyelash margins, usually affects lower eyelid  
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esotropia   inward turning of the eyes, cross-eyed (convergent strabismus)  
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exophthalmia   abnormal protrusion of the eyeballs  
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exotropia   outward turning of the eyes ; walleyed (divergent strabismus)  
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