What surgical procedure is performed to create an opening in the iris?

The surgical procedure performed to create an opening in the iris is known as an iridotomy. This procedure is typically conducted to treat certain conditions, such as narrow-angle glaucoma, where an increase in eye pressure can occur. An iridotomy involves using a laser to create a small hole in the peripheral portion of the iris, which allows for improved fluid drainage within the eye. This hole facilitates the flow of aqueous humor from the posterior chamber to the anterior chamber, thus helping to alleviate the intraocular pressure.

In contrast, an iridectomy involves surgical excision of a portion of the iris and is more invasive, often used in cases with different indications. Iris transplantation is a more complex procedure that is not routinely performed and isn't focused specifically on creating an opening. Laser capsulotomy pertains to the treatment of cloudiness in the lens capsule following cataract surgery, and it does not involve the iris. Understanding these distinctions helps clarify why iridotomy is the correct answer when discussing procedures specifically aimed at creating an opening in the iris.