title: A rapid test for dark adaptation.
abstract: With the known relationship between defects in dark adaptation and vitamin A deficiency, liver disease, and retinal degenerative changes, the development of a practical and simple test of dark adaptation has taken on some importance. Standard dark adaptation testing instruments are somewhat impractical, expensive, and not generally available. Therefore a simple, in expensive test for evaluation of dark adaptation is desirable. Using established standards of macular dark adaptation, a test was designed that appears to be relatively simple, reasonably accurate, and rapid. The test and equipment are described.
mesh_terms: D001333:Automobile Driver Examination; D003118:Color Perception / Q000502:physiology; D003623:Dark Adaptation; D006801:Humans; D008266:Macula Lutea / Q000502:physiology; D014481:United States; D014787:Vision Tests / Q000295:instrumentation