AIM: To investigate the therapeutical effect of an improved trabeculectomy on the persistent ocular hypertension of acute angle-closure glaucoma.

METHODS: Totally 105 standardized patients were divided into two groups: experimental group and control group. The patients in experimental group were operated with an improved trabeculectomy and patients in control group were operated with the routine trabeculectomy. Visual acuity, intraocular pressure and changes of anterior chamber were recorded at the preoperative and postoperative period. The data were collected to do some statistical analysis.

RESULTS: Totally 51(73.9%)patients' visual acuities were improved in experimental group; 10(14.5%)patients' visual acuities did not change; intraocular pressure of 46 eyes(66.7%)was steady and normal; the anterior chambers of 11 eyes(15.9%)became more shadow than before. In control group, there were 17 eyes(47.2%)whose visual acuities were improved; 12(33.3)patients' visual acuities did not change; intraocular pressure of 21 eyes(58.3%)was steady and normal; the intraocular pressure of 4 eyes(11.1%)cannot be controlled, and need to be operated again. The anterior chambers of 20 eyes(55.6%)became more shadow than before.

CONCLUSION:The treatment of an improved trabeculectomy on the persistent ocular hypertension of acute angle-closure glaucoma is safe and valid.