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Related Concept Videos

Block Diagram Reduction01:22

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Updated: Jan 23, 2026

Systemic Treatment for Postnatal, Juvenile, and Runted Adult Mice by Retrobulbar Sinus Injection
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Contralateral amaurosis after a retrobulbar block.

Blake Williams1, Sidney A Schechet1, Ishani Hariprasad2

  • 1Department of Ophthalmology and Visual Science, The University of Chicago, Chicago, IL, USA.

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|June 19, 2019
PubMed
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A rare complication of retrobulbar anesthesia, central spread of anesthetic, can cause vision loss in the non-operated eye. Prompt diagnosis via imaging and monitoring are crucial for recovery.

Keywords:
Pars plana vitrectomyRetrobulbar blockSurgical complication

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Area of Science:

  • Ophthalmology
  • Neurology

Background:

  • Retrobulbar anesthesia is a common technique for ophthalmic surgery.
  • Complications, though rare, can be severe.

Observation:

  • A patient developed sudden vision loss in the non-operated eye after uneventful vitrectomy.
  • Physical exam showed a dilated, non-reactive pupil with a normal-appearing retina.

Findings:

  • CT and MRI revealed an air bubble in the optic nerve sheath of the operated eye.
  • This suggested anesthetic spread to the contralateral optic nerve.

Implications:

  • Central spread of anesthetic is a rare but serious complication of retrobulbar blocks.
  • Timely diagnosis through imaging and appropriate management are essential.
  • Full visual recovery is possible with monitoring.