Post‐trabeculectomy ocular biometric changes

Abstract

Trabeculectomy is the most common surgical procedure for the management of glaucoma, which may significantly influence ocular biometry. Axial length and anterior chamber depth tend to decrease, while crystalline lens and choroidal thickness increase post‐operatively. An increase in with‐the‐rule astigmatism is also observed after the procedure. Such biometric changes affect intraocular lens power calculation even years after the procedure. Non‐contact biometric methods and postponing cataract surgery after trabeculectomy could reduce calculation errors associated with surgically induced alterations in ocular biometrics.

Key words:

• anterior chamber depth
• axial length
• choroidal thickness
• keratometry
• lens thickness
• trabeculectomy

ACKNOWLEDGEMENT

This study was supported financially by the Ophthalmic Epidemiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Additional information

Funding

Shahid Beheshti University of Medical Sciences