Table 4.

The Mean Cup/Disc Ratio Among the Deep Sclerectomy and Trabeculectomy Groups

Cup/Disc Ratio	Deep Sclerectomy Mean ± SD (Range)	Trabeculectomy Mean ± SD (Range)	P value*
Preoperative	0.4 ± 0.2 (0.3–0.9)	0.5 ± 0.3 (0.4–0.9)	0.388
1 week	0.4 ± 0.2 (0.2–0.7)	0.3 ± 0.2 (0.2–0.7)	0.422
1 month	0.3 ± 0.1 (0.1–0.6)	0.3 ± 0.1 (0.2–0.7)	0.399
3 months	0.3 ± 0.2 (0.1–0.5)	0.3 ± 0.2 (0.1–0.6)	0.378
6 months	0.3 ± 0.2 (0.1–0.5)	0.2 ± 0.2 (0.1–0.6)	0.422
12 months	0.3 ± 0.2 (0.1–0.6)	0.3 ± 0.2 (0.1–0.6)	0.421
24 months	0.3 ± 0.2 (0.1–0.6)	0.2 ± 0.2 (0.1–0.7)	0.395
36 months	0.2 ± 0.2 (0.1–0.5)	0.2 ± 0.3 (0.1–0.6)	0.434

Note: *Using independent samples t test.