Chapter 19: Diseases of the Eyes, Ears, Nose, and Throat

The most common type (52%) also appears during the teen years, is typified by severe and progressive peripheral loss, but good central acuity (no worse than 20/50) is maintained until around age 60. Varieties of the common type are genetically different, and have characteristic loss of central acuity at different ages (e.g., 40-60). ................
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