Laser action can prevent worsening of vision damage. Laser action is performed when there are indications of new blood vessels starting to grow on the retina and damage occurs in the center of the retina which allows the eye to see fine details.
Before the laser, the patient's eye acuity will be checked to check the level of interference experienced by the patient. Then given eye drops to dilate the patient's pupils. Improved vision does not immediately occur after the laser. It took several hours for vision to improve. Lasers are very useful in the treatment of glaucoma because the procedure is simple, safe and relatively non-invasive.