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Updated: Jan 27, 2026

Optimizing Minimally Invasive Spine Surgery: A Fully 3D CT O-Arm Navigated Workflow in MIS TLIF
Published on: October 17, 2025
[Unilateral mydriasis: a complication of spine surgery in prone position]
Priyanka Gupta1, Vijay B Adabala1, Amiya K Barik1
1All India Institute of Medical Sciences (AIIMS), Department of Anesthesia, Rishikesh, Índia.
Abstract:
Prone position is commonly used for better access to surgical site, but may be associated with a variety of complications. Perioperative Visual Disturbances or loss is rare but a devastating complication that is primarily associated with spine surgeries in prone position. In this case we report a 42 year old ASA-II patient who developed anisocoria with left pupillary dilatation following lumbar microdiscectomy in prone position. Following further evaluation of the patient, segmental pupillary palsy of the left pupillary muscles was found to be the possible because of anisocoria. Anisocoria partially improved but persisted till follow up.
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