Goniotomy is a minimally invasive glaucoma surgery (MIGS) procedure mainly used to treat congenital glaucoma (or, in other words, infants who were born with it) and pediatric glaucoma. Although a treatment usually seen for children, it is now increasingly used for mild to moderate open-angle glaucoma, sometimes combined with cataract surgery to reduce medication dependency. Glaucoma is a serious eye disease that happens when there is increased pressure inside the eye, which can lead to optic nerve damage, vision impairment, and even permanent blindness if left untreated. Goniotomy is designed to improve the eye’s natural drainage system, helping to lower pressure and preserve vision. Early diagnosis is important to guarantee long-term visual health.



The procedure focuses on the trabecular meshwork, which is part of the eye’s drainage angle. In a healthy eye, natural fluid flows through this meshwork and drains properly, maintaining normal eye pressure. In some forms of glaucoma, this drainage system does not function correctly. Fluid builds up, causing pressure to rise as well as pain. During a goniotomy, the surgeon uses a specialized surgical instrument to create a small opening in the trabecular meshwork. This allows fluid to drain more effectively, reducing intraocular pressure. Using a surgical microscope and a special lens to view the drainage angle clearly, the surgeon carefully makes a precise incision in the abnormal tissue. The procedure itself is delicate but relatively quick, and no additional anesthesia aside from the cataract surgery is needed.

One of the major advantages of goniotomy is that it addresses the underlying drainage problem directly. It is an ideal procedure for patients with open-angle pseudoexfoliation or secondary glaucoma. In fact, it is estimated that patients will see a 20% to 30% reduction in pressure, allowing patients to minimize glaucoma drops. When performed alongside cataract removal, visualization of the angle is improved. Serious complications are relatively uncommon when the procedure is performed by an experienced ophthalmic surgeon. Patients usually go home the same day, as postoperative care typically involves the use of medicated eye drops to reduce inflammation and prevent infection, along with regular follow-up visits to monitor eye pressure and the healing process.

In some cases, additional procedures may be necessary if eye pressure remains high; however, goniotomy surgery serves as an alternative to more invasive procedures such as a trabeculectomy. Goniotomy may be repeated or combined with other glaucoma surgeries, depending on the patient, with studies indicating a 92% success rate. Patient vision usually returns quickly, with recovery estimated to be about six weeks. Timely diagnosis with a surgical intervention are critical factor in achieving the best possible visual outcomes.

Goniotomy remains an important and effective surgical option in the management of both pediatric and adult glaucoma. By restoring the eye’s natural drainage system and reducing intraocular pressure, this procedure plays a vital role in protecting vision and improving the quality of life for those affected.