Laser peripheral iridotomy
Laser peripheral iridotomy (LPI) is a very common procedure for narrow angle glaucoma. It creates a bypass for aqueous fluid to flow through a small hole in the edge of the iris straight to the trabecular meshwork, so that the fluid does not push the lens of the eye forward into the iris, creating pupillary block and an angle closure attack. LPI is performed in our office and takes only a few minutes. There are no restrictions on the patient’s activity afterwards. LPI can buy the patient some time in the management of narrow angle glaucoma, so that the definitive treatment, which happens to be cataract surgery, may be delayed.