2024年7月11日 · Laser Peripheral Iridotomy (YAG PI) is a procedure that uses a laser to create a small hole in the iris to improve the flow of fluid within the eye. YAG PI is recommended for patients with narrow angles or angle-closure glaucoma to prevent a …

Iridotomy can be accomplished using the photodisruptive Q-switched Nd:YAG laser (Nd:YAG) or the photo-thermal Nd:YAG-KTP 532 nm (which is still often called Argon laser) and solid-state lasers. The two laser types may also be used in sequential combination.

2024年7月7日 · YAG laser peripheral iridotomy is a procedure used to treat narrow-angle glaucoma and prevent acute angle-closure glaucoma. During the procedure, a laser is used to create a small hole in the iris to improve the flow of fluid in …

2024年7月5日 · During the YAG PI procedure, a laser is used to create a small hole in the iris, allowing the fluid inside the eye to flow more freely and reduce the risk of angle-closure glaucoma. The procedure is typically performed in an ophthalmologist’s …

2020年5月5日 · Laser peripheral iridotomy is the standard first-line treatment in closed-angle glaucoma and eyes at risk for this condition. Laser peripheral iridotomy has been used since 1984 both as treatment and prevention of the disease. 1. What is …

A YAG laser peripheral iridotomy (PI) is performed almost exclusively for patients with narrow angles, narrow-angle glaucoma, or acute angle closure glaucoma. Aqueous fluid is made in the ciliary body of the eye, which is situated behind the iris.

A laser iridotomy may be a preventative step for patients with anatomically narrow angles or treatment for angle-closure glaucoma. A laser iridotomy creates a small opening in the iris to free fluid trapped behind the iris, pushing it forward and potentially closing the drainage angle.

Laser PI is used to prevent the angle closure glaucoma, or to prevent a recurrent attack in patients who have had an acute attack. Treatment will be needed to both eyes. How does YAG PI work? • The draining channels are present at the junction/angle of the Iris (coloured muscle in the eye) and the cornea (clear window).

The YAG PI Laser is used to perform a peripheral iridotomy, which is a treatment for a specific type of glaucoma called narrow-angle glaucoma. The surgeon uses the YAG PI Laser to create a small hole at the edge of the iris (the colored part of your eye).

2022年12月2日 · A yttrium aluminum garnet (YAG) laser is often used to perform the LPI. If available, a green laser (532 nm) can pretreat and thin out a thick, brown iris. In these cases, the energy is set to approximately 600 to 800 mW across a 50 µm spot size and delivered at a duration of 0.1 seconds per application via a foot pedal.