optokinetic
/ˌɒptə(ʊ)kɪˈnɛtɪk/ /ˌɒptəʊkʌɪˈnɛtɪk/Physiology and Medicine
adjective
Designating or relating to the action of turning of the eyes or body towards a moving object; specifically designating a physiological form of nystagmus elicited by the fixation of objects that are rapidly traversing the visual field (a response typically found in mammals).
Origin
1920s. From opto- + kinetic.