The Aging Special Senses Essay

1179 Words Jan 14th, 2012 5 Pages
Vanessa McClain
Anatomy and Physiology GE 258
Unit 9. Assignment 2. The Aging Special Senses
Thursday, November 17, 2011

1.) Age-related Macular Disease – Is a disease associated with aging that gradually destroys sharp, central vision. Central vision is needed for seeing objects clearly and for common daily tasks such as reading and driving. AMD affects the macula, the part of the eye that allows you to see fine detail. There are two forms of age-related macular degeneration: Dry form and Wet form. The dry form is characterized by the presence of yellow deposits, called drusen, in the macula. A few drusen may not cause change in vision; however, as they grow in size and increase in number, they may lead to a dimming or
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There are two types: Age related cataracts which appear later in life and congenital cataracts, that may be present when a baby is born or shortly after birth. Cataracts cause an individual to see halos around lights. In some, the glare from car lights become bothersome and driving at night may be dangerous. Although far sight is affected more than near vision. If the cataracts are bad enough, it can make reading more difficult as well.
4.) Detached Retina – Is a disorder of the eye in which the retina peels away from its underlying layer of support tissue. Initial detachment may be localized, but without rapid treatment the entire retina may detach, leading to vision loss and blindness. It affects daily activities because of the sudden appearance of “floaters”, (dark, semi-transparent, floating shapes) in the field of vision or a shower of black dots. (These are actually red blood cells because all retinal tears bleed a little when they occur.) It causes a loss of central vision, a loss of peripheral vision called the “curtain effect” and brief, bright flashes of light which may be most noticeable when you move your eyes in the dark.
5.) Deafness (sensorineural and conductive) – Sensorineural hearing loss is due to damage to the pathway that sound impulses take from the hair cells of the inner ear to the auditory nerve and the brain. Conductive hearing loss is caused by anything that interferes with the transmission of sound from the outer to the
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