Trabeculectomy is a surgical procedure used to treat glaucoma, a condition that increases pressure in the eye. The surgery creates a new drainage pathway for fluid, helping to lower intraocular pressure and prevent damage to the optic nerve. During the procedure, a small flap is made in the eye's surface, allowing excess fluid to escape into a small reservoir under the conjunctiva. This helps maintain a healthier pressure level in the eye, reducing the risk of vision loss associated with glaucoma. Recovery may involve follow-up visits to monitor eye pressure and healing.