Trabeculectomy (filtering surgery) is the type of operation most often used to reduce pressure in eyes with glaucoma. Trabeculectomy is usually done when medication and laser treatment for glaucoma have failed to reduce the pressure in the eyes enough to prevent damage to a person’s eyesight. Filtering surgery (lowering the eye pressure) has a high success rate, and many patients are able to stop or reduce their glaucoma eye drops afterwards. Of course, as with any surgical procedure, there are risks including the possibility of bleeding and infection. In rare cases, complications can lead to blindness. Dr. Barad has had good success with this procedure. She considers the benefits of filtering surgery in all her glaucoma patients who have not responded to conventional drops or laser surgery for glaucoma.