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Supranuclear disorders of eye movement
1Department of Clinical Ophthalmology, University of Sydney, Australia.
Australian and New Zealand Journal of Ophthalmology
|February 1, 1989
Summary
This study details the systems controlling eye movements, including saccades, smooth pursuit, vestibular, optokinetic, and vergence systems. It also classifies supranuclear eye movement disorders and presents an analysis algorithm.
Area of Science:
- Neuroscience
- Ophthalmology
- Systems Biology
Background:
- Eye movements are controlled by distinct neural systems.
- Different systems govern saccades, smooth pursuit, vestibular/optokinetic responses, and vergence.
Purpose of the Study:
- To categorize eye movement abnormalities of supranuclear origin.
- To present a systematic algorithm for analyzing these disorders.
Main Methods:
- Review and classification of supranuclear eye movement disorders.
- Development of an analytical algorithm for diagnosis.
Main Results:
- Eye movement disorders are classified into nystagmus, ocular oscillations, saccadic dysfunction, smooth pursuit dysfunction, gaze palsy, tonic deviation, and vergence disability.
- An algorithm is provided for analyzing these conditions.
Conclusions:
- Understanding the discrete systems of eye movement is crucial.
- A structured approach aids in diagnosing complex supranuclear eye movement disorders.