What surgical procedure involves creating an opening in the iris?

The procedure that involves creating an opening in the iris is known as iridotomy. This surgical technique is primarily used to treat certain types of glaucoma, specifically angle-closure glaucoma, by creating a small hole in the iris to improve the flow of aqueous humor and reduce intraocular pressure. By doing so, it helps to prevent the buildup of fluid that can lead to an increase in eye pressure, which is crucial for maintaining eye health and preventing vision loss.

Iridotomy can be performed using various methods, including laser techniques, but the fundamental characteristic of the procedure is its creation of a direct opening in the iris. This distinguishes it from other procedures like iridoplasty, which involves reshaping the iris, or iridectomy, which involves removing a portion of the iris itself. Laser peripheral iridotomy is also a specific application of the iridotomy technique, but it is a more defined method involving laser use.