Abstract: Objective    To evaluate the anterior chamber changes in patients with primary open-angle glaucoma and ocular hypertension before and after pneumatic trabeculoplasty (PNT) by Oculyzer. Methods    A total of 30 patients (53 eyes) with primary open angle glaucoma and ocular hypertension were included in this study. The vision， intraocular pressure(IOP) and anterior chamber were evaluated before PNT, 7 and 30 days after PNT. Results    The angle of anterior chamber was (28.32±1.31)° before PNT， and (30.64±1.43)° and (32.65±1.58)° 7 and 30 days after PNT. The IOP was (22.3±3.8)mmHg before PNT, and was degraded to (19.2±3.1)mmHg and (19.6±2.7)mmHg 7 and 30 days after PNT. The differences of the angle of anterior chamber and IOP before and after PNT were significant(P<0.05). Conclusion    The angle of anterior chamber increases after PNT. The traction of trabecular meshwork may be the probable mechanism to lower IOP in the primary open-angle glaucoma and hypertensive patients.

Key words: Glaucoma, Oculyzer, Pneumatic trabeculoplasty, Anterior chamber