Anat Bachar Zipori, MD; Nasrin Najm-Tehrani, FRCS Ed (Ophth), FRCSC
Affiliation
(ABZ) Department of Ophthalmology, Tel Aviv Sourasky Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; (NN) Department of Ophthalmology and Vision Sciences, The Hospital for Sick Children, Toronto, Faculty of Medicine, University of Toronto, Canada; FRCS Ed (Ophth) FRCSC
Subject
Vertical Optokinetic Nystagmus; OKN Drum Test
Description
Visual depiction of the vertical OKN drum test. The vertical optokinetic drum test is an exam used to elicit vertical optokinetic nystagmus (OKN) when there is horizontal nystagmus. The hand-held "optokinetic" drums or tapes that are used to elicit smooth movements primarily test the pursuit system. This video supplements Paediatric Neuro-ophthalmology: Visual Acuity Assessment Strategies: https://collections.lib.utah.edu/ark:/87278/s6vh9z9g
