Nystagmus aggravated or induced by ocular fixation, arising as optokinetic nystagmus, or resulting from midbrain lesions. ... (05 Mar 2000) ... 
that occurring only on gazing fixedly at an object.
Type: Term Definitions: 1. nystagmus aggravated or induced by ocular fixation, arising as optokinetic nystagmus, or resulting from midbrain lesions.