Vitreoretinal Surgery at High Altitude

Elevation affects vitrectomy fluidics, intraocular gas behavior, tamponade selection, and postoperative travel planning.

By
Christine I. Clavell, MD
James P. Dossett, MD
July 1, 2026
13 min

Retinal Physician

Objective:

To discuss the unique challenges and considerations for vitreoretinal surgery performed at high altitudes.

Approach:

Altitude Effects: Elevation affects vitrectomy fluidics, intraocular gas behavior, tamponade selection, and postoperative travel planning.
Surgical Challenges: High-altitude practice presents challenges related to intravitreal gas expansion and vacuum limitations in surgical instruments.
Travel Recommendations: Guidance on travel routes and altitude changes is provided to patients post-surgery, especially regarding air travel and automobile travel.

Key Findings:

Gas expands with altitude, increasing intraocular pressure (IOP) risks.
Maximum vacuum levels in vitrectomy systems are reduced at high altitudes.
Nonexpansile gas can still expand if the patient ascends, risking severe IOP increases.
Gradual altitude changes are better tolerated by patients with gas-filled eyes.

Interpretation:

Surgical efficiency and patient safety during vitreoretinal procedures at high altitudes require careful consideration of altitude effects on equipment and patient management.

Limitations:

The study does not provide specific data on patient outcomes related to altitude changes post-surgery.
Recommendations may vary based on individual patient circumstances and specific surgical procedures.