Tube Shunt Surgery for Glaucoma

When glaucoma eye drops, laser treatments, or less invasive procedures do not lower eye pressure enough, your ophthalmologist may recommend a more advanced treatment called a tube shunt.

What Is a Tube Shunt?

A tube shunt is a small glaucoma drainage implant placed in the eye during surgery. Your eye continuously produces a fluid called aqueous humor. In a healthy eye, this fluid drains through a natural drainage system. Glaucoma can disrupt that process, allowing pressure to build inside the eye and potentially damaging the optic nerve. A tube shunt creates another route for the fluid to drain.

The implant has two main parts: a very small tube and a thin plate. The tube is placed inside the front portion of the eye. It carries fluid to the plate, which is secured to the white part of the eye beneath the eyelid. The fluid collects around the plate and is gradually absorbed by the surrounding tissue, helping to lower intraocular pressure.

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Image of a doctor sharing the placement of the tube shunt to a patient during their consultation.

Why Tube Shunt Surgery?

Tube shunts are usually recommended by your eye doctor when glaucoma is advanced, difficult to control, or has not responded adequately to other treatments.

Before recommending surgery, an ophthalmologist may try treatments such as:

The right treatment depends on the condition of the optic nerve, previous procedures, eye anatomy, and the amount of pressure reduction needed.

Benefits of Tube Shunt Surgery

Lowers eye pressure: Creates a new pathway for fluid to drain from the eye.

Helps protect remaining vision: Reducing eye pressure can slow additional optic nerve damage.

Supports advanced glaucoma treatment: Often considered when eye drops, laser treatment, or other procedures are not enough.

May reduce reliance on medications: Some patients may need fewer glaucoma eye drops after surgery.

Provides long-term pressure control: Tube shunts are designed to manage eye pressure over an extended period.

Can treat complex glaucoma: May be appropriate for patients with advanced glaucoma, previous eye surgery, or certain difficult-to-control forms of the disease.

What to Expect With Tube Shunt Surgery

Tube shunt surgery is typically performed as an outpatient procedure. Your eye is numbed for comfort, and your ophthalmologist places a small tube and drainage plate to create a new pathway for fluid to leave the eye and help lower eye pressure. Most patients return home the same day.

Recovery varies by patient, but some temporary blurry vision, redness, irritation, or swelling can be expected as the eye heals. Your surgeon will provide eye drops and specific aftercare instructions, and follow-up visits will be used to monitor healing and eye pressure.

Imagery of a preliminary exam for tube shunt surgery at West Texas Eye Associates in Lubbock, Texas.

How Do I Know If a Tube Shunt Surgery Is Right for Me?

A glaucoma evaluation is the only way to determine whether tube shunt surgery is appropriate. If your glaucoma remains uncontrolled or you have been told you may need glaucoma surgery, schedule an evaluation with West Texas Eye Associates.

 

Call: 806-792-5900

Tube Shunt Surgery FAQs

No. Tube shunt surgery cannot cure glaucoma or restore vision that has already been lost. Its purpose is to lower eye pressure and help protect your remaining vision from further damage.

A tube shunt may be recommended when glaucoma eye drops, laser treatments, or previous procedures have not lowered eye pressure enough. It may also be appropriate for certain complex or advanced forms of glaucoma.

Patients can usually return home the same day as surgery. Because the eye will be numbed and medication may be given to help you relax, you will need someone to drive you home.

Your surgeon will prescribe eye drops to reduce inflammation and help prevent infection. You may also need to avoid heavy lifting and certain activities for approximately two to four weeks. Attend every follow-up visit so your doctor can monitor your eye pressure and healing.

Some patients may need fewer glaucoma medications after surgery, while others may still require eye drops to reach their target pressure. Do not stop using any medication unless instructed by your ophthalmologist.

Tube shunts are intended to provide long-term pressure control, and some continue working effectively for many years. However, scar tissue or other changes may eventually affect drainage. Regular glaucoma appointments remain necessary even when surgery successfully lowers eye pressure.

No. Both procedures help lower eye pressure, but they are generally used in different situations. MIGS is commonly considered for milder glaucoma, while a tube shunt may be recommended when greater pressure reduction is needed or glaucoma is more difficult to control.