---
title: Trabeculectomy
description: "Trabeculectomy is a glaucoma operation that creates a new drainage channel to lower eye pressure and protect sight. ## Why trabeculectomy is recommended Glaucoma damages the optic nerve when pressure in the eye stays too high, even with drops, tablets,…"
url: "https://bluefinvision.com/knowledge-base/topics/treatments-procedures/trabeculectomy/"
updated: "2025-12-19"
category: "Treatments & Procedures"
---

# Trabeculectomy

Trabeculectomy is a glaucoma operation that creates a new drainage channel to lower eye pressure and protect sight.

## Why trabeculectomy is recommended

Glaucoma damages the optic nerve when pressure in the eye stays too high, even with drops, tablets, or laser treatment.

Trabeculectomy offers a stronger, longer lasting pressure reduction by allowing fluid to leave the eye under a small flap in the white of the eye.

- Considered when other treatments are no longer enough to keep pressure safe
- Suitable for many types of glaucoma, including advanced open angle disease
- Aims to slow or halt further sight loss rather than restore lost vision
- Requires careful follow up to fine tune healing and pressure

## What happens during and after surgery

The surgeon fashions a tiny trapdoor in the white coat of the eye and creates a new channel for fluid to drain into a small blister bleb hidden under the upper eyelid.

Recovery is gradual, and you will use several drops and attend frequent checks while the eye settles.

- Expect redness, blurred vision, and light sensitivity for several weeks
- Stitches or laser adjustments may be needed to balance drainage
- Avoid rubbing, heavy lifting, and swimming until your specialist advises
- Report increasing pain, sudden blur, or discharge straight away