More than 3.4 million (3%) Americans aged 40 years and older are either legally blind (having visual acuity 20/200 or worse or a visual field of less than 20 degrees) or are visually impaired (having visual acuity of 20/40 or less).
More than 3.4 million (3%) Americans aged 40 years and older are either legally blind (having visual acuity 20/200 or worse or a visual field of less than 20 degrees) or are visually impaired (having visual acuity of 20/40 or less).