Type of Surgery
Information
Last updated: 02/17/2009
Glaucoma is a disease that injures the optic nerve, causing progressive vision loss. Glaucoma is a major cause of blindness in the United States. If caught early, glaucoma-related blindness is easily prevented. However, because it does not produce...
symptoms until late in its cycle, periodic tests for the disease are necessary.
Glaucoma is usually associated with an increase in the pressure inside the eye, called intraocular pressure (IOP). This increase occurs in front of the iris in a fluid called the aqueous humor. Aqueous humor exits through tiny channels between the iris and the cornea, in an area called the trabeculum. When the trabeculum is blocked, pressure from the build up of aqueous humor either increases rapidly with pain and redness, or builds slowly with no symptoms until there is a significant loss of vision. Trabeculectomy is the last treatment employed for either type of glaucoma. It is used only after medications and laser trabeculoplasty have failed to alleviate IOP.
Advertisement
Search
Other Information
Trabeculectomy is a surgical procedure used in the treatment of glaucoma to relieve intraocular pressure by removing part of the eye's trabecular meshwork and adjacent structures. It is the most common glaucoma surgery performed and allows drainage of aqueous humor from within the eye to underneath the conjunctiva where it is absorbed. This outpatient procedure is most commonly performed under monitored anesthesia care in a half awake state using a retrobulbar block or a combination of topical and subtenon (Tenon's capsule) anesthesia.
Other Information
Approximately 56% of all patients achieve results of 20/20 or better and over 90% achieve 20/40 or better (which is good enough to drive without corrective lenses in most regions).1 Those with moderate to high myopia (greater than 7 diopters) have a lesser chance of achieving that result. As technique and technology improve, the results continue to improve.
From: Eye Surgery Education Council
Find a Qualified Specialist
Looking for a specialist?
Please enter your zip code.