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Selective saccadic palsy after cardiac surgery.

Eui-Jung Kim¹, Sun-Young Oh, Ha-Cheol Choi

¹Department of Neurology, School of Medicine, Chonbuk National University, Jeonju, South Korea.

Journal of Neuro-Ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society

|August 21, 2010

Summary

Cardiac surgery can cause selective deficits in eye movements, specifically slow horizontal saccades and absent vertical saccades. Other visual functions like smooth pursuit and vestibulo-ocular reflex remained intact.

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Area of Science:

Neuroscience
Ophthalmology
Cardiology

Background:

Cardiac surgery is a complex procedure with potential neurological complications.
Ocular motor function assessment is crucial for identifying neurological deficits post-surgery.

Observation:

A patient developed a selective deficit in voluntary saccades and nystagmus quick phases after cardiac surgery.
Horizontal voluntary saccades were notably slow, while vertical saccades were absent.

Findings:

The patient exhibited a specific impairment of horizontal saccadic eye movements.
Vertical saccades, vestibular nystagmus, and optokinetic nystagmus were absent.
Crucially, smooth pursuit, vestibulo-ocular reflex, and gaze holding abilities were preserved.

Implications:

This case highlights a specific vulnerability of saccadic eye movement pathways to cardiac surgery.
Understanding these selective deficits aids in diagnosing and managing post-cardiac surgery neurological complications.
Further research is needed to elucidate the precise mechanisms underlying this selective ocular motor impairment.