The diagnostic value of saccades in movement disorder patients: a practical guide and review

Pichet Termsarasab, Thananan Thammongkolchai, Janet C. Rucker, Steven J. Frucht
2015 Journal of Clinical Movement Disorders  
Saccades are rapid eye movements designed to shift the fovea to objects of visual interest. Abnormalities of saccades offer important clues in the diagnosis of a number of movement disorders. In this review, we explore the anatomy of horizontal and vertical saccades, discuss practical aspects of their examination, and review how saccadic abnormalities in hyperkinetic and hypokinetic movement disorders aid in diagnosis, with video demonstration of classic examples. Documentation of the ease of
more » ... on of the ease of saccade initiation, range of motion and conjugacy of saccades, speed and accuracy of saccades, dynamic saccadic trajectory, and the presence or absence of saccadic intrusions and oscillations are important components of this exam. We also provide a practical algorithm to demonstrate the value of saccades in the differential diagnosis of the movement disorders patient.
doi:10.1186/s40734-015-0025-4 pmid:26788350 fatcat:5iji2efqybhzxfhdutafe7ebka