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Common Conditions and Diseases of the Sensory System

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Term
Definition
achromatopsia   color blindness  
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anacusis   total absence of hearing  
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astigmatism   abnormal curving of the cornea causing distorted vision  
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acoustic neuroma   benign tumor whose pressure can cause progressive hearing loss  
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blepharitis   inflammation of the eyelids  
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cataract   lens of the eye becomes cloudy, decreases vision  
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chalazion   tumor or mass on the eyelid  
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choleseatoma   chronic disease of the tympanic membrane forming a cyst in the middle ear  
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conjunctivitis   inflammation of the conjunctiva  
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corneal abrasion   injury to the cornea  
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deafness   hearing impairment of inability to hear  
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diabetic retinopathy   edema and hemorrhages in the retina from diabetes that can lead to blindness  
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diplopia   seeing double images  
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episcleritis   inflammation of the subconjunctival layer of the sclera  
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estropia   inward turning of the eye  
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exotropia   outward turning of the eye  
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glaucoma   intraocular pressure increase that can cause atrophy of the optic nerve and blindness  
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hearing impairment   a degree of hearing loss causing impairment  
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hernianopia   loss of half of the visual field, common in stroke  
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hordeolum   sty, inflammation of a sebaceous gland of the eye  
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hyperopia   farsightedness, can see far away but not close up  
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iritis   inflammation of the iris  
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keratitis   inflammation of the cornea  
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labyrinthitis   inflammation of the inner ear  
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macular degeneration   deterioration of the retina  
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Meniere's disease   condition of the labyrinth, episodic vertigo and hearing loss that can lead to deafness  
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myopia   nearsightedness, can see items up-close but not far away  
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nystagmus   involuntary eye movements, rapid jerking  
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otitis externa   swimmers ear, inflammation of the external ear canal  
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otitis media   acute or chronic inflammation or infection of the middle ear  
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otomycosis   fungal infection of the auditory canal  
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otosclerosis   abnormal growth of bone at the stapes causing progressive hearing loss  
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papilledema   edema and inflammation of the optic nerve  
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presbyopia   visual loss due to age  
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pterygium   thickening of the conjuctiva causing overgrowth of the cornea  
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ptosis   upper eyelid drooping  
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retinal detachment   retina seperates from the choroid causing blindness  
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retinitis pigmentosa   progressive disease, the retina hardens and atrophy occurs, causing blindness  
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retinoblastoma   malignant tumor of the eye  
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scotoma   blind spot in the vision field  
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strabismus   lazy eye or crossed eyes, the muscles of the eye are weak  
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vestibular neuritis   inflammation of the vestibular nerve  
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