[Demonstration of the tonographic effect in YAG laser trabeculoplasty in chronic glaucoma].

In a pilot study comprising 16 eyes of 16 patients with chronic open-angle glaucoma the tonographic outflow facility was examined before and after Nd-YAG laser treatment of the trabecular meshwork. For evaluation of the facility effect of laser trabeculoplasty, the tonographic record between the third and seventh minute according to the tonography test of Leydhecker was used. An improvement in outflow facility was established which correlated with the postoperative fall in IOP.