It is a surgical procedure done to treat glaucoma. Its purpose is to reduce intraocular pressure - Which increases with this disease- through medical treatment (antihypertensive eye drops). Its use is recommended to those patients who are unable to adequately control intraocular pressure. This surgery is usually done in people with open-angle glaucoma, when this does not evolve favorably after medical treatment, with a risk of severe impairment of vision. It is usually performed under local anesthesia.

PROCEDURE DESCRIPTION This intervention consists in creating a leak in the eye to improve the flux of the aqueous humor and thus lowering high intraocular pressure; there are different techniques used to achieve this goal. In some cases, it is necessary to place a valve implant, consisting in placing an artificial system in order to facilitate the evacuation of aqueous humor. BENEFITS OF THE PROCEDURE Ocular pressure decreases, preventing irreversible destruction of the optic nerve and vision loss, due to decreased visual field.

It is a surgical procedure that involves surgically making a hole in the base of the iris to avoid rising of intraocular pressure or blockages in the flow of aqueous humor. It is used in cases of closed-angle glaucoma. This is done in cases where the route of aqueous humor drainage is narrow or occluded, preventing evacuation of the fluid that occurs within the eye to the external circulation, which originates an increase in intraocular pressure (glaucoma) The procedure reduces the chances of having an acute attack of glaucoma in the future.

This is a procedure performed under topical anesthesia; this means using drops to anesthetize the eye, and wearing a special contact lens that makes a small incision in the iris to create a duct for the passage of aqueous humor from the posterior chamber into the anterior chamber of the eye without having to go through the pupil. This technique avoids blocking the circulation of the internal fluid of the eye which could cause an acute glaucoma attack. YAG laser is generally used. Prior to performing the procedure, a drop of Pilocarpine eye-drops is applied, which produces an effect that decreases pupil size (myosis). Afterwards, the laser is used, which is focused by a lens directly on the iris to avoid damaging the cornea. Gradually, a hole through which you can see the crystalline is formed.