title: [The two-pencil test for testing stereopsis].
abstract: The two-pencil test is a method of comparing binocular and monocular stereopsis. It furnishes information on binocular vision as used in everyday life. Good binocular performance is sometimes still possible in cases of monocular impairment of vision, such as cataract or maculopathy, as well as harmonious anomalous retinal correspondence, even though more sophisticated stereotests may be negative. Ten situations in which the two-pencil test is useful are discussed.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003867:Depth Perception; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010468:Perceptual Disorders / Q000175:diagnosis*; D013285:Strabismus / Q000175:diagnosis*; D014787:Vision Tests / Q000295:instrumentation / Q000379:methods*
vernacular_title: Der Treffversuch zur Prüfung des Stereosehens.