Eye chart smaller symbols until the person cannot identify the symbols. The smallest symbols that can be reliably identified is considered the person's visual acuity. The Snellen chart is the most widely used. Alternative types of eye charts include the logMAR chart, Landolt C, E chart, Lea test, Golovin–Sivtsev table, the Rosenbaum chart, and the Jaeger chart. Charts display several rows of optotypes, which are standardized symbols for testing vision. Optotypes are usually letters, numbers, or geometric symbols. Each row of the chart depicts optotypes of a different size. Typically the largest optotypes are in the top row. The optotypes become progressively
Fight for Sight (U.S.) Society, and WomensEyeHealth.org. Fight for Sight in the U.S. is unaffiliated with the younger organizations with the same name in the UK or in Ireland. Numerous leaders in eye and vision research and academia received a Fight for Sight grant early in their careers, including Harold Scheie, MD (1950), who founded the Scheie Eye Institute at the University of Pennsylvania, Arthur Jampolsky, MD (1952), whose efforts led to the creation of the Smith-Kettlewell Eye Research Institute, A. Edward Maumenee, MD (1958) director of the Wilmer Eye Institute, founder of the Eye Bank Association of America and potent force behind the