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Table 6 P values for comparisons between results for intraocular pressure (IOP), number of applied IOP-lowering medication and success levels at baseline (where applicable), 12 and 24 months after surgery between subgroups of early, moderate, and advanced disease stages in the trabeculectomy (TE) and PRESERFLO (PF) MicroShunt groups using Kruskal–Wallis test

From: PRESERFLO MicroShunt implantation versus trabeculectomy for primary open-angle glaucoma: a two-year follow-up study

Parameter

TE

PF MicroShunt

 

Baseline

12 months

24 months

Baseline

12 months

24 months

IOP

0.27

0.41

0.84

0.66

0.74

0.92

Medication

0.18

0.98

0.56

0.23

0.35

0.58

Complete success

n.a

0.87

0.74

n.a

0.47

0.37

Qualified success

n.a

0.46

0.31

n.a

0.33

0.50

  1. TE = trabeculectomy; PF = PRESERFLO; IOP = intraocular pressure