A Comparison between Tube Surgery, ND:YAG Laser and Diode Laser Cyclophotocoagulation in the Management of Refractory Glaucoma

Table 5

Table showing comparisons for matched categories. Exact matches were achieved for all category ranks in 12 of the postsurgical group and 8 of the POAG group. The miscellaneous group represents patients who are mismatched in one or more categories. IOP drop is from preop to last followup.

	Postsurgical (𝑛=12)				POAG (𝑛=8)				Miscellaneous (𝑛=25)
	T	Y	D	𝑃	T	Y	D	𝑃	T	Y	D	𝑃
Preop IOP	41.4	37.8	33.8	NS	42.6	40.6	32.6	NS	40.9	38.3	30.9	<0.0004
12 M IOP	19.8	23.8	20.7	NS	17.5	21.8	21.0	NS	13.7	21.3	19.6	0.003
Final IOP	19.8	23.4	19.8	NS	16.8	22.5	20.3	NS	14.6	18.8	21.4	<0.02
IOP drop	21.7	14.4	13.9	NS	25.9	18.1	12.4	0.03	26.3	16.9	12.2	<0.0005
% IOP drop	49.9	37.8	35.2	NS	58.5	44.3	37.1	NS	62.5	44.4	36.0	0.001

NS: no statistically significant difference, T: tube group of patients, Y: cycloYAG group of patients, and D: cyclodiode group of patients.