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Acquired unilateral visual loss attributed to an accommodative spasm.

R P Rutstein¹, W Marsh-Tootle

¹School of Optometry, University of Alabama at Birmingham, 35294-0010, USA. RRutstein@icare.opt.uab.edu

Optometry and Vision Science : Official Publication of the American Academy of Optometry

|August 16, 2001

Summary

Accommodative spasm (AS) can cause acquired unilateral vision loss. This case reveals a unique instance where AS in one eye was triggered by covering the other eye, a previously undocumented phenomenon.

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Area of Science:

Ophthalmology
Neuro-ophthalmology

Background:

Accommodative spasm (AS) is a rare cause of acquired unilateral visual loss.
This study details a unique case of AS.
The condition was triggered by occlusion of the contralateral eye.

Observation:

A 27-year-old woman experienced a 2-month vision decrease in her left eye.
Unilateral AS of 5 D occurred in the left eye only when the right eye was occluded.
The right eye also showed AS under occlusion.

Findings:

Normal accommodation was restored with binocular viewing or contralateral eye occlusion.
A 5 D convex lens improved left eye visual acuity to 20/20.
Cycloplegic refraction revealed low hyperopia in both eyes.

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Implications:

Accommodative spasm can manifest as acquired unilateral visual loss.
This is the first reported case of AS triggered by contralateral eye occlusion.
Understanding this trigger mechanism is crucial for diagnosing and managing AS.