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

A guide to the techniques and analysis of clinical data. Each of the seventeen sections begins with a drawing and biographical sketch of a seminal contributor t

Measurement of visual acuity has been the cornerstone of visual testing since Snellen began quantitating visual acuity using letter optotypes in the 1860s. Bjer