Congenital Ocular Motor Apraxia (COMA) (Video)

Update item information
Identifier 20190321_nanos_currentconcepts1_02
Title Congenital Ocular Motor Apraxia (COMA) (Video)
Creator Jane Edmond, MD
Subject Congenital Ocular Motor Apraxia (or Congenital Oculomotor Apraxia); Infantile-Onset Saccade Initiation Delay; Joubert Syndrome; Molar Tooth Sign
Description Cogan first described this congenital condition which is characterized by an impairment of voluntary, saccadic eye movements in the horizontal direction. Patients with COMA typically present with poor visual responses in early infancy and may appear visually impaired. When head control is established at about 6 months, compensatory horizontal head thrusting movements often develop, seemingly utilizing an exaggerated vestibulo-ocular reflex. The lateral head rotation overshoots the target of regard, with the eyes lagging behind. When the eyes finally "land" on the visual target the head simultaneously turns back to a normal position with the eyes are in a primary gaze position. Head thrusting is common but not universal. Horizontal slow pursuit ; movements may be normal or partly impaired in COMA patients, and vertical eye movements are usually preserved.
Relation is Part of NANOS 2019: Current Concepts in Eye Movement Disorders in Kids: Case-based Potpourri
Contributor Primary Jane Edmond, MD
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Date 2019-03
Format video/mp4
Source 2019 North American Neuro-Ophthalmology Society Annual Meeting
Rights Management Copyright 2019. For further information regarding the rights to this collection, please visit:
Holding Institution North American Neuro-Ophthalmology Association. NANOS Executive Office 5841 Cedar Lake Road, Suite 204, Minneapolis, MN 55416
Collection Neuro-ophthalmology Virtual Education Library: NOVEL
Language eng
ARK ark:/87278/s6bg764c
Setname ehsl_novel_nam
Date Created 2019-07-11
Date Modified 2019-08-01
ID 1431917
Reference URL