title: Partial angle closure.
abstract: During the course of negative provocative test for closed-angle glaucoma using pilocarpine and phenylephrine 60% of eyes develop significant reductions in outflow facility at some stage during the test. It is shown that these reductions can be explained by postulating the presence of partial-angle closure since: (1) A random sample (6) of 53 eyes showing an abnormal response subsequently had a peripheral iridectomy. On reprovoking they then behaved as normal eyes with a uniform increase in outflow. (2) Fifty-eight eyes that had a peripheral iridectomy for closed-angle glaucoma (spontaneous or induced) responded to provocative testing as do normal eyes.
mesh_terms: D004338:Drug Combinations; D005901:Glaucoma / Q000175:diagnosis*; D006801:Humans; D007429:Intraocular Pressure / Q000187:drug effects*; D007498:Iris / Q000601:surgery; D010656:Phenylephrine / Q000494:pharmacology*; D010862:Pilocarpine / Q000494:pharmacology*
chemical_list: D004338:Drug Combinations; D010862:Pilocarpine; D010656:Phenylephrine