GERO 300 Chapter Notes - Chapter 7: Presbycusis, Convergent Thinking, Prospective Memory
7 Feb 2018
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Information acquisition begins at the sensory system: vision 2 kinds of change occur at different ages, outer parts of the eye, such as cornea & lens. Begin to occur in many people b/t 35-45 years old: retina within the eye. That"s why people need glasses in the middle age: yellowing of the lens: results in a reduction in the amount & quality of light passing through the lens to reach the retina. Older people need more illumination to view objects: peripheral changes development of cataracts & decrease in pupil size: more illumination needed. Results in opacity of the lens, blocking light from reaching the retina: age-related macular degeneration (amd): affects the macula, part of the retina particularly relevant for acute vision. Loss in visual acuity, may need use of a strong magnifying glass for pursuits such as reading: glaucoma: involves high intraocular pressure that damages the optic nerve & affect the visual field, cochlea: main neural receptor.
