Comparison of ExPress Implantation and Partial Deep Sclerectomy Combined with ExPress Implantation and Simultaneous Phacoemulsification

Table 4

Amount of hypotensive drugs: mean values, median values, standard deviations, and range in the Ex-Press device implantation (ExPress) and Mermoud’s ExPress modification (DS-ExPress) groups at specific times after surgery.

Time	ExPress			DS-ExPress
	Mean ± SD	Median	Range	Mean ± SD	Median	Range
Pre-op	2.3 ± 1.1	2.0	1–5	2.3 ± 1.1	2.0	1–5	0.79
6th month	0.37 ± 0.8	0	0–4	0.32 ± 0.8	0	0–4	0.543
12th month	0.7 ± 1.1	0	0–4	0.51 ± 1.0	0	0–4	0.193
24th month	1.6 ± 1.3	2	0–4	0.7 ± 1.1	0	0–4	0.002

Pre-op: before operation. Mann–Whitney’s U test.