Table 1.

Characteristics of the Study Subjects

Parameters	Descriptive Statistics*
Age, y	60.5 ± 14.6, (22, 95)
Sex, male:female	13:17
Refraction, D	−0.36 ± 3.36, (−5.25, 3.75)
Baseline IOP, mm Hg	33.6 ± 10.2, (20, 59.6)
Central corneal thickness, μm	549 ± 46, (490, 692)
Axial length of eye, mm	22.5 ± 1.3, (20.6, 26.2)
Mean deviation, dB	−19.8 ± 8.1, (−31.2, −6.2)
Number of preoperative IOP-lowering drugs	3 ± 1, (2, 5)
Best corrected visual acuity
6/6 to 6/18	16
6/24 to 6/60	3
<6/60	11

^* Values are shown in mean ± SD, range (minimum, maximum).