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Retinal arteriovenous communication.

¹School of Optometry, University of Waterloo, Ontario, Canada. williams@uwaterloo.ca

Optometry (St. Louis, Mo.)

|June 8, 2001

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Retinal arteriovenous communications (RAC) are rare vascular anomalies. Visual-field testing can detect associated vision disturbances, even without other cranial vascular abnormalities.

Area of Science:

Ophthalmology
Vascular Neurology

Background:

Retinal arteriovenous communications (RAC) arise from embryonic vascular development disturbances.
These anomalies can affect cranial, orbital, and maxillofacial vasculature.
Associated conditions include glaucoma, optic atrophy, and neurological deficits.

Observation:

A case of a 27-year-old woman with a significant arteriovenous malformation in the left eye is presented.
The malformation involved major temporal branches of the central retinal artery and vein.
Ocular and CT examinations revealed no other significant abnormalities.

Findings:

Visual-field testing identified nasal field defects in the affected eye.
Scotomas can be indicative of RAC.
The absence of intracranial abnormalities was noted despite the presence of RAC.

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Implications:

Visual-field testing is a valuable tool for diagnosing RAC.
RAC may occur in isolation without broader vascular involvement.
Early detection and management of RAC are crucial for preserving vision.