Laser Peripheral Iridotomy (LPI) is the first-line treatment of choice for angle-closure glaucoma or for patients at risk (narrow angles) for acute blockage.
Goal of the Treatment
In angle-closure glaucoma, a pressure imbalance is created between the back and front of the iris, causing the iris (the colored part of the eye) to push forward and physically block the drainage canals. LPI uses a YAG laser to create a tiny, hidden hole in the peripheral part of the iris. This hole acts as a 'safety valve,' equalizing the pressures and preventing the iris from blocking the drainage angle.
Recovery Process
The procedure is performed in the clinic. About an hour before the treatment, you will receive drops to constrict the pupil (pilocarpine). The treatment is very fast (about a minute or two). Afterward, you will receive anti-inflammatory drops for a few days. The treatment prevents the danger of a 'glaucoma attack,' and the tiny hole is virtually invisible to the untrained eye.