Measurement of visual acuity has been the cornerstone of visual testing since Snellen began quantitating visual acuity using letter optotypes in the 1860s. Bjer
This comprehensive reference source is a state-of-the-art guide to the scientific, clinical, rehabilitative, and policy aspects of vision impairment and blindne
When children and adults apply for disability benefits and claim that a visual impairment has limited their ability to function, the U.S. Social Security Admini