Trabeculectomy

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Trabeculectomy

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Trabeculectomy

Trabeculectomy is a surgical procedure used to treat glaucoma, a condition characterized by increased intraocular pressure (IOP) that can lead to optic nerve damage and vision loss. The goal of trabeculectomy is to lower IOP by creating a new drainage pathway for the aqueous humor, the fluid inside the eye.

Indications

Trabeculectomy is typically indicated for patients with open-angle glaucoma or angle-closure glaucoma who have not responded adequately to medications or laser therapy. It may also be considered in cases where the patient cannot tolerate medications or when rapid IOP reduction is necessary to prevent further optic nerve damage.

Procedure

The procedure is usually performed under local anesthesia. The surgeon creates a small flap in the sclera, the white part of the eye, and removes a piece of the trabecular meshwork, which is part of the eye's drainage system. This creates a new channel for the aqueous humor to exit the eye, thereby reducing IOP.

A small reservoir, or "bleb," forms under the conjunctiva, the thin membrane covering the sclera, where the fluid can collect and be absorbed into the surrounding tissues. The size and function of the bleb are crucial for the success of the surgery.

Postoperative Care

After trabeculectomy, patients are typically prescribed antibiotic and anti-inflammatory eye drops to prevent infection and control inflammation. Regular follow-up visits are necessary to monitor IOP and ensure the bleb is functioning properly. Complications such as bleb failure, infection, or excessive scarring may require additional treatment.

Complications

Potential complications of trabeculectomy include:

• Hypotony (excessively low IOP)
• Bleb leak
• Infection (endophthalmitis)
• Cataract formation
• Choroidal detachment
• Vision loss

Alternatives

Alternatives to trabeculectomy include other surgical procedures such as glaucoma drainage devices, laser trabeculoplasty, and minimally invasive glaucoma surgery (MIGS). The choice of treatment depends on the type and severity of glaucoma, as well as the patient's overall health and preferences.

Related Pages

• Glaucoma
• Intraocular pressure
• Optic nerve
• Sclera
• Conjunctiva
• Trabecular meshwork