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King–Devick Test
The King–Devick Test (K–D Test) is defined by ''Mosby’s Medical Dictionary'' as a tool for evaluation of saccade, consisting of a series of test cards of numbers. The test cards become progressively more difficult to read due to variability of spacing between the numbers. Both errors in reading and speed of reading are included in deriving a score. Saccades are quick, simultaneous movements of both eyes.
The King–Devick Test was developed in 1976 by Alan King, O.D. and Steven Devick, O.D. as an indicator of saccadic performance as it relates to reading ability. In 1983, a sample of 1202 children ages six to fourteen was screened using the K–D Test. The study done by the State University of New York (SUNY) concluded that the test was quick and easy to score and could be administered by non-eye care practitioners. For more than 30 years, the King–Devick Test has been a proven indicator of oculomotor inefficiencies regarding eye movements during reading. The King–Devick Test (K–D Test) is utilized as a tool in schools, eye care and psychologist offices to help detect learning disabilities, including dyslexia.
The King–Devick Test is an objective, physical test based on the measurement of the speed of Rapid Number Naming (reading aloud a series of single digit numbers from left to right on three test cards), and screens for impairments of eye movements, attention, language, and other correlates of suboptimal brain function. The sum of the three test card time scores constitutes the summary score for the entire test. The test can be administered in less than two minutes. In 2011, researchers published study findings supporting the utility of the King–Devick Test as a sideline remove-from-play concussion screening tool.
== Applications ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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