retinoscope

n. a device used to assess the refractive state of the eye. It projects a beam of light into the eye; by determining the direction in which the light moves when the retinoscope is moved, the clinician can detect myopia, hyperopia, and astigmatism. Lenses of various powers can be placed between the retinoscope and the eye to determine the correction that provides the best refraction for the patient. Compare ophthalmoscope.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

October 15th 2024

alcohol intoxication delirium

in DSM–IV–TR and DSM–5, a reversible syndrome that develops over a short period (usually hours to days) following heavy alcohol consumption. Disturbance of consciousness (e.g., reduced ability to focus, sustain, or shift attention) is accompanied by changes in cognition (e.g., memory deficit, disorientation, or language disturbance) in excess of those usually associated with alcohol intoxication. See also substance intoxication delirium.