GDD Surgery (Glaucoma Drainage Devices)

When Other Treatments Have Not Been Enough

For patients with complex or advanced glaucoma that has not responded to medications, laser, or standard surgery, a Glaucoma Drainage Device offers a reliable and lasting solution. At RGC Eye Hospital, we implant small, precision-engineered devices that continuously manage the pressure inside your eye — protecting your optic nerve and preserving your sight for the long term.

What Is a Glaucoma Drainage Device?

A Glaucoma Drainage Device — also called a tube shunt — is a tiny medical implant placed inside the eye to drain excess fluid and reduce intraocular pressure. A fine silicone tube carries fluid from inside the eye to a small plate positioned behind the eyeball, where it is absorbed by surrounding tissue. Unlike standard glaucoma surgery, this device provides a more permanent and stable drainage pathway — making it especially effective for patients whose condition has proven difficult to control.

Who Is This Procedure For?

• Patients whose pressure is not controlled by drops, tablets, or laser
• Those whose previous trabeculectomy has failed or stopped working over time
• Patients with neovascular, uveitic, or other complex forms of glaucoma
• Eyes with significant scarring that makes standard surgery difficult
• Anyone who needs reliable, long-term pressure management

What Happens During the Procedure?

Step 1 — Anaesthesia

The eye is numbed with local or general anaesthesia depending on what is most appropriate for you. You will be completely comfortable throughout.

Step 2 — Placing the Plate

A small drainage plate is sutured to the outer wall of the eye behind the eyelid, where it sits invisibly and acts as the anchor for the device.

Step 3 — Inserting the Tube

A fine silicone tube is guided through the wall of the eye. Fluid drains continuously through this tube to the plate, keeping the pressure at a safe and stable level.

Step 4 — Closing

The tube is protected with a small patch and the eye is neatly closed. The procedure takes around 60 to 90 minutes. Most patients go home the same day.

Recovery and What to Expect

The eye will be red and mildly swollen for a few days. Vision will fluctuate as the eye adapts to the new drainage system — this is entirely normal. Anti-inflammatory and antibiotic drops will be prescribed and regular check-ups scheduled to monitor the pressure and confirm the device is functioning correctly.

Why Patients Trust RGC Eye Hospital

• One of the leading centres for complex glaucoma management in Dhaka
• Surgeons with specialist training and extensive GDD implantation experience
• High-quality devices for reliable long-term pressure control
• Thorough follow-up and genuine ongoing support throughout recovery