Trabeculoplasty and visual field decay: a follow-up study using computerized perimetry

15 eyes with glaucomatous visual field defects were followed with computerized perimetry before and nearly one year after Argon Laser Trabeculoplasty. An expected reduction of the IOP was achieved, the pressure being on an average 25.7 mm Hg before and 17.7 after the treatment. Performance values obtained at computerized perimetry were used to trace the trend of visual field development. There was a visual field decay during the period preceding the intervention. This trend did not change after trabeculoplasty.