I was looking for prevalence rates for macular degeneration and found these maps.

The prevalence rate for age-related macular degeneration (AMD) is 2.1% for the U.S. population age 50 and older, so about 2.1 million Americans have late AMD.

The prevalence rate for cataract is 17% for the U.S. population age 40 and older, so about 24.4 million older Americans have cataract.

Millions more have diabetic retinopathy, glaucoma, and other eye conditions that interfere with daily activities – driving, reading, preparing meals.