The most commonly used procedure is called trabeculectomy, which may or may not be perforating. This operation consists of seeking a new outlet of aqueous humor from the eye to the outside.

With the techniques currently used, complications are few and can be resolved in the first days after surgery.

The most serious consequence is the loss of the effect of trabeculectomy, which involves maintaining intraocular pressure at high levels.

To achieve a less traumatic postoperative process, in some cases anti-healing agents are supplied. The purpose of these is to limit the eye's ability to seal the fistula that has opened during the operation.

For a couple of years, a series of techniques, called MIGS, have been under study that perform the same operation of filtering the aqueous humor, but in a less aggressive way and, therefore, generate fewer complications in the postoperative period.