What is it?

A small opening made in the iris (colored part of the eye). Generally, this is performed with a laser. It can also be performed surgically at which time it is called a peripheral iridectomy.

Who does it affect?

The most common reason for a PI is to equalize or lower the pressure in the eye. Patients who have narrow angle glaucoma or are at risk due to the shape of their eye may require a PI.

How is it treated?

The patient is seated at a microscope and numbing drops are instilled. A small contact lens may be used in conjunction with this five-minute painless procedure. The risks are few but do include bleeding; scarring or pressure rise in the eye. If scarring occurs, the laser PI may need to be repeated at a later time.