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[Congenital oculomotor apraxia. Presentation--developmental problems--differential diagnosis]
M Steinlin1, L Thun-Hohenstein, E Boltshauser
1Univ.-Kinderklinik Zürich.
Klinische Monatsblatter Fur Augenheilkunde
|May 1, 1992
Summary
Congenital oculomotor apraxia (COMA) impairs voluntary horizontal eye movements in infants, often causing developmental delays. Compensatory head movements emerge, and while eye issues may improve, cognitive and motor delays often persist.
Area of Science:
- Ophthalmology
- Neurology
- Pediatrics
Context:
- Congenital oculomotor apraxia (COMA), first described by Cogan in 1952, is a rare neurological disorder affecting voluntary eye movements.
- Infants with COMA present with absent horizontal saccades, intact pursuit and vertical eye movements, and often delayed visual or psychomotor development.
Purpose:
- To summarize the clinical features, developmental impact, and neuroradiological findings of congenital oculomotor apraxia.
- To highlight the importance of differentiating COMA from acquired ocular apraxias.
Summary:
- COMA is characterized by the inability to generate voluntary horizontal saccades, with compensatory head thrusts developing later in infancy.
- Affected children frequently exhibit delayed motor and speech development, impaired cognitive function, and may require specialized education.
- Neuroradiological findings in COMA are variable and nonspecific, including cerebellar hypoplasia, corpus callosum hypoplasia, and grey matter heterotopias.
Impact:
- This summary aids clinicians in diagnosing and managing COMA, recognizing its long-term developmental consequences.
- Understanding COMA's distinct features is crucial for differentiating it from other neurodegenerative conditions presenting with ocular motor deficits.