Table 3. The preoperative and postoperative intraocular pressure (IOP) measures at different postoperative visits, the drop and percentage drop in IOP, field changes (Mean deviation (MD) and pattern standard deviation (PSD)) and retinal nerve fiber layer (RNFL) changes in each group.

	Group A		Group B		P-value
	Mean±SD	Range	Mean±SD	Range
IOP (mmHg)
Preoperative	29.11±0.85	24–34	29.73	22–38	0.701
1 day postoperative
Value	10.0±0.46	6–12	11.54±0.41	8–14
Drop	19.11±0.97	12–24	18.18±1.19	11–28
% drop	65.11±1.98	50–79.31	60.05±1.97	46.15–73.68	0.102
1 week postoperative
Value	10.67±0.51	6–14	12.0±0.32	10–14
Drop	18.44±0.997	13–24	17.73±0.95	12–24
% drop	62.80±2.08	52–79.31	58.997±1.13	50–66.67	0.275
1 month postoperative
Value	10.67±0.23	10–12	12.73±0.34	10–16
Drop	18.44±0.94	13–24	17.0±0.97	10–24
% drop	62.70±1.54	52–70.59	56.37±1.42	45.45–66.67	0.006
6 months postoperative
Value	11.78±0.27	10–14	12.73±0.28	12–16
Drop	17.33±0.94	12–22	17.0±1.08	10–24
% drop	58.85±1.73	46.15–66.67	56.07±1.64	46.15–66.67	0.325
1 year postoperative
Value	12.89±0.33	12–16	12.91±0.47	10–16
Drop	16.22±0.83	11–22	16.82±1.29	10–25
% drop	55.21±1.495	44–64.71	55.02±2.47	38.46–71.43	0.913
Field
MD (dB)
Preoperative	−15.62±1.76	−4.56 to −28.10	−15.38±2.00	−2.03 to −29.63	0.957
Postoperative	−14.78±1.50	−4.33 to −22.98	−14.15±1.77	−1.5 to −23.79
Change	0.84±0.49	−0.56 to 6.42	1.23±0.38	−0.03 to 6.21
% Change	3.49±1.82	0.4–22.85	7.43±1.85	0.41–26.11	0.114
PSD (dB)
Preoperative	9.53±0.86	3.2–15.6	6.43±0.51	1.57–9.82	0.003
Postoperative	9.95±0.76	3.3–15.3	6.92±0.67	1.5–11.81
Change	0.42±0.31	−0.3 to 3.97	0.496±0.38	−1.06 to 4.11
% Change	8.70±5.89	1.92–77.24	6.38±5.33	0–60.18	0.072
OCT
RNFL (μ)
Preoperative	71.63±5.78	41.96–112	63.42±4.97	45.45–114.6	0.211
Postoperative	71.61±5.77	40.2–114.3	63.47±4.91	45.43–113.9
Change	−0.03±0.199	−8.96–7.77	0.05±0.21	−2.51–1.12
% Change	0.13±2.06	0.1–18.23	0.21±0.39	0.01–4.61	0.549

P-value<0.05 is considered statistically significant. Bold and italic values are statistically significant.