eye physiological measurement optokinetic reflex 2021-06-18T18:05:03Z CMO:0003729 OKN OKR Optokinetic response PMID:28441076 This eye movement consists of two components that serve to stabilize images on the retina: a slow, pursuit phase and a fast “reflex” or “refixation” phase. Measurement of the cumulative time spent visually tracking a moving object determines the extent of the reflex. The reflex is seen when an individual follows a moving object with their eyes, which then moves out of the field of vision at which point their eye moves back to the position it was in when it first saw the object. clinical_measurement_ontology optokinetic nystagmus slaulede