Sensory Disorders
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Created by:
kristen7168 on January 30, 2012
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31 terms
Terms | Definitions |
|---|---|
 myopia | nearsightedness, light rays focus in front of retina |
| hyperopia | farsightedness, light rays focus behind retina |
| astigmatism | unequal curvature of lens |
| presbyopia | associated with aging, results in difficulty with near vision |
| conjunctivitis | pink eye, inflammation of the conjunctiva, contagious |
| blepharitis | inflammation of the eyelid, caused by excessive dryness and oiliness |
| hordeolum | stye, acute inflammation of oil or sweat glands of the eyelid |
| chalazion | meibomian cyst, accumulation of lipid material from a chronically obstructed meibomian gland in the eyelid |
| keratitis | inflammation of the cornea, caused by bacteria, virus, or fungal infections, herpes simplex keratitis most common |
| glaucoma | increased IOP, occurs after the age of 40 - eye discomfort, reduced peripheral vision (open angle), painful, hard sightless eyes (angle-closure) |
| cataracts | opacity or cloudiness of lens - halo around lights |
| hyphema | hemorrhage into the anterior chamber, caused by trauma |
| detached retina | the sensory layer becomes separated from the pigmented layer of the retina - "floaters", definite gaps in vision or blind spots |
| blind spot | scotoma, place in the optic disk that has no photoreceptors |
| conductive hearing loss | sound waves to the organs of hearing are disturbed |
| sensorineural hearing loss | disturbance of the organs in the inner ear or the transmitting nerve |
| central hearing loss | brains inability to interpret sound after they have been transmitted |
| functional hearing loss | no organic cause is found, no damage to auditory nerve is visible, stems from an underlying psychological problem |
| external otitis | inflammation of external ear, swimmers ear |
| otitis media | inflammation of middle ear, serous, chronic, acute purulent, chronic purulent |
| otosclerosis | bony fixation of the stapes, slow or stops vibrations of stapes = impairs or destroys hearing |
| cholesteatoma | a growth that occurs when a tympanic membrane perforation occurs |
| mastoiditis | infection of one of the mastoid bones, usually an extension of a middle ear infection that was untreated |
| labyrinthitis | inflammation of the labyrinthine canals of the inner ear, most common cause of vertigo |
| acoustic neuroma | non-cancerous tumor that develops on the nerve that connects the ear to the brain |
| meniere's | fluctuations in the production or reabsorbsion of fluid in the inner ear; there is too much circulating fluid - vertigo, tinnitus |
| diabetic retinopathy | characterized by capillary microaneurysms, hemorrhage, exudates and formation of new vessels, treatment is photocoagulation |
| macular degeneration | the damage to the macula that occurs in both eyes, with one eye's vision tending to deteriorate more rapidly. blurred vision is the first symptomatic (dry), distortion of vision; lines become wavy (wet) |
| open angle glaucoma | familial tendency with onset age 45-65, slow and progressive vision loss, halos, and eye pain, drugs must be taken for life |
| closed angle glaucoma | rapid onset of decreased vision, halos, and severe eye pain, medical emergency, treated with emergency meds |
| acute otitis media | inflammation or infection of middle ear, severe throbbing pain behind tympanic membrane, more common in children because of shorter, straighter eustachian tube |
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