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Related Experiment Video

Updated: Jun 19, 2026

Minimally Invasive Surgical Decompression of Occipital Nerves

Minimally Invasive Surgical Decompression of Occipital Nerves

Published on: September 13, 2024

Microvascular decompression of the optic chiasm. Case report.

Nancy McLaughlin¹, Michel W Bojanowski

¹Department of Surgery, Division of Neurosurgery, Centre Hospitalier de l'Université de Montréal-Hôpital Notre-Dame, Montreal, Quebec, Canada.

Journal of Neurosurgery

|October 27, 2009

Summary

An elongated anterior cerebral artery (ACA) can compress the optic chiasm, causing visual field deficits. Microvascular decompression surgery successfully restored vision in a patient with this rare condition.

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Microvascular Decompression: Salient Surgical Principles and Technical Nuances

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Published on: July 5, 2011

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Last Updated: Jun 19, 2026

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Microvascular Decompression: Salient Surgical Principles and Technical Nuances

Microvascular Decompression: Salient Surgical Principles and Technical Nuances

Published on: July 5, 2011

Area of Science:

Neurology
Ophthalmology
Vascular Surgery

Background:

Compression of the optic chiasm by an elongated anterior cerebral artery (ACA) is a rare cause of visual field deficits.
Microvascular decompression for chiasmal compression by an ACA has not been previously reported.

Observation:

A patient presented with progressive visual deficits.
MR imaging revealed compression of the optic apparatus by an elongated and tortuous right ACA (A(1) segment).

Findings:

The patient underwent microvascular decompression surgery, with Teflon insertion between the ACA and the chiasm.
Postoperatively, the patient experienced progressive improvement in visual field deficits.

Implications:

An elongated ACA can cause significant visual field deficits through chiasmal compression.
Microvascular decompression is a viable treatment option for progressive visual field deficits caused by ACA compression of the chiasm.