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19 Cards in this Set
- Front
- Back
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Nearsightedness |
Myopia |
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Farsightedness |
Hyperopia |
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Irregularly shaped cornea that causes light rays to focus at different points |
Astigmatism |
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Age related changes to the eye (3) |
Lens and pupil lose ability to focus Less elacticity Lens becomes yellow and less transparent |
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Age related change in Cornea |
Becomes flattened and loses refractive power |
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Two changes in lens due to age |
Loss of elasticity and ciliary muscles weaken |
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Change in iris |
Loses pigmentation |
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the clouding of the eye's lens that can cause vision problems |
Cataract |
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Loss of peripheral vision |
Glaucoma |
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Loss of central vision. No cure |
Macular Degeneration |
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Age related deafness |
Presbycusis |
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Main cause of presbycusis |
Exposure to moderate levels of noise over a long period of time |
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Affects outer and middle ear, blocking sound waves and is treatable |
Conductive Hearing loss |
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Affects inner ear, loss of hair cells and nerve damage, and is hard to treat other than cochlear implant |
Cochlear Hearing Loss |
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Ringing in the ear (no treatment) |
Tinnitus |
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What percent of people between age 65-75 are affected by tinnitus? |
37% |
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Intolerance of slightly louder than normal sounds |
Loudness Recruitment |
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Is loudness recruitment treatable? |
No |
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Dizziness |
Vertigo |
