Epidemiological Characteristics of Inpatients Undergoing Surgery for Glaucoma at Tianjin Eye Hospital from 2013 to 2017

Table 4

Changes in IOP after different surgical methods for primary glaucoma (M, mmHg).

	Preoperative IOP	Postoperative IOP	IOP difference	Z
PACG
Phaco	18.5	13.0	4.0	−14.5	<0.001
Phaco-trab	32.0	13.0	18.0	−27.8	<0.001
Trab	43.0	13.0	27.0	−23.7	<0.001
LPI	61.0	11.0	49.5	−7.4	<0.001
TSCP	46.1	17.0	29.5	−9.4	<0.001
POAG
Phaco-trab	22.0	16.0	7.0	−10.2	<0.001
Trab	29.0	14.0	15.0	−8.6	<0.001
TSCP	32.5	18.0	14.5	−3.5	0.001
GDI	33.0	9.0	27.0	−2.9	0.003

IOP = intraocular pressure, PACG = primary angle-closure glaucoma, POAG = primary open-angle glaucoma, Phaco = phacoemulsification, Phaco-trab = phacotrabeculectomy, Trab = trabeculectomy, LPI = laser peripheral iridectomy, TSCP = transscleral diode laser cyclophotocoagulation, and GDI = glaucoma drainage implant.