Over 3 million people (40+) in the U.S. are legally blind or have low vision, which means they have a best-corrected visual acuity below 6/12 (greater than 20/40). The primary causes of poor vision and blindness in America are connected to certain eye conditions and diseases. These include cataracts, glaucoma, diabetic retinopathy, and age-related macular degeneration, among other eye disorders.
Many people also have a refractive error, such as astigmatism, nearsightedness (myopia), farsightedness (hyperopia), presbyopia, or a combination. Eyeglasses, contact lenses, or LASIK eye surgery are necessary to correct mild to severe refractive errors.
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