Table 1. Change in RNFL and ONH parameters on the Stratus OCT following trabeculectomy.

OCT Parameters	Preoperative (mean±SD)	Postoperative (mean±SD)
		1 Week	Pa	1 Month	Pa	3 Months	Pa
RNFL thickness (μm)
Average	54.1±14.0	59.4±19.5	0.009	54.5±10.2	0.193	51.9 ±11.9	0.619
Superior	59.9±17.7	64.9±24.5	0.136	60.1±15.2	0.679	59.5±17.7	0.717
Inferior	60.3±20.6	67.1±22.2	0.023	61.1±16.6	0.426	56.3±14.2	0.185
Nasal	57.4±17.7	58.3±20.7	0.652	55.1 ±15.7	0.448	52.4±19.5	0.149
Temporal	38.6±11.3	47.1±23.5	0.044	42.6 ±14.4	0.477	39.3 ±10.1	0.619
ONH parameters
Rim area (mm2)	0.44±0.29	0.55±0.5	0.758	0.51±0.44	0.981	0.48±0.32	0.795
Cup area (mm2)	2.33±0.5	2.00±0.61	0.014	2.19±0.58	0.084	2.25±0.59	0.554
HIRW (mm)	0.79±0.25	0.79 ±0.38	0.962	0.65 ±0.27	0.356	0.76 ±0.26	0.653
Cup–disc area ratio	0.87±0.13	0.73±0.19	0.005	0.79 ±.0.15	0.246	0.81±0.16	0.309

Abbreviations: HIRW: horizontal integrated rim width; ONH: optic nerve head; RNFL: retinal nerve fibre layer.

^aThe Wilcoxon signed-rank test.