Table 4.

Intraocular Pressure Management

Variable	GDD	CPC	p-value†
IOP
Pre-op	27.8 ± 8.5	33.2 ± 8.6	0.0172*
Final	16.5 ± 8.7	14.5 ± 8.5
Reduction	11.3 ± 9.8	18.7 ± 12.0
% Reduction*	40.7% (p < 0.0001)	56.3% (p < 0.0001)
Glaucoma Meds
Pre-op	3.88 ± 0.98	3.57 ± 1.03	0.3906
Final	2.56 ± 1.32	2.62 ± 1.60
Reduction	1.31 ± 1.31 (p < 0.0001)	0.95 ± 1.72 (p=0.0194)

^†Tests for the difference in IOP reduction between treatment groups.

^*Test for difference in pre-operative and final IOP within the same treatment group

T-tests were used for continuous variables; a Cochran-Armitage Trend Test was used for the ordinal IOP Category variable