Diseases of the Sensory System
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16 terms
Terms | Definitions |
|---|---|
 Abnormal refraction of light coming into the eye; caused by an irregular curvature of the cornea or lens | Astigmatism |
| Nearsightedness; caused by an elongation of the eyeball, causing the image to focus too far forward,before it reaches the retina | Myopia |
| Farsightedness; caused by compaction of the eyeball, causing the image ti focus behind the retina | Hyperopia |
| Night blindness;caused by retinal degeneration;vitamin A deficiency | Nyctalopia |
| Farsightedness in older adults; caused by advancing age | Presbyopia |
| Inflammation of the conjunctiva; caused by bacterial or viral infection | Conjunctivitis (pinkeye) |
| Deviation of the eyes | Strabismus |
| Medial deviation of one eye | Convergent Strabismus |
| Lateral deviation of one eye | Divergent Strabismus |
| A condition in which excessive pressure builds up within the eye; three times more common in blacks than in whites | Glaucoma |
| Clouding of the lens or crnea that blocks light rays from entering the eye | Cataract |
| Progressive loss of hearing in older adults; caused ny advancing age | Prebycusis |
| Ringing in the ear | Tinnitus |
| Inflammation of the middle ear; common in young children; painful conditionleading to fever and diminished hearing | Otitis Media |
| Inflammation of the internal ear; usually produces vertigo (dizziness), loss of balance, and nausea | Otitis Interna (labyrinthitis) |
| A disorder involving the labyrinth of the inner ear; usually lasts for a few years; leads to a progressive loss of hearing in the affected ear, accompanies by attacks of dizziness, nausea, vomiting, sensitivity to loud sounds, tinnitus, and headache that can last for minutes or hours. | Meniere disease |
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