Lancaster red-green test

Lan·cas·ter red-green test

(lan'kas-tĕr red-green' test)
A determination to measure ocular deviations in various fields of gaze in adult patients with acquired strabismus and diplopia by placing a red filter over the right eye and a green filter over the left eye followed by alignment by the patient of a red or green light with light of opposite color projected by the examiner.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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