Table 4

Change in glaucoma medication
Phacotrabeculectomy Phacocanaloplasty P value
n Mean number P value n Mean number P value
Baseline 20 2.5 ± 1.2 19 2.8 ± 1.1 .309 a
Postoperative
  1 day 20 0.0 <.0001 b 17* 0.0 <.0001 b 1.000 a
  7 days 20 0.0 <.0001 b 17* 0.3 ± 0.8 <.0001 b .557 a
  4 weeks 20 0.0 <.0001 b 17* 0.5 ± 1.1 .001 b .232 a
  3 months 20 0.1 ± 0.3 <.0001 b 17* 0.7 ± 1.1 .001 b .167 a
  6 months 20 0.2 ± 0.4 <.0001 b 17* 0.9 ± 1.3 .002 b .117 a
  12 months 19~ 0.2 ± 0.4 <.0001 b 15+ 1.0 ± 1.5 .013 b .228 a

Values are means ± SD (standard deviation).

n sample size.

versus baseline; phacotrabeculectomy versus phacocanaloplasty.

* Two patients developed filtering blebs after canaloplasty and were therefore excluded.

+ Two patients needed cyclodestruction to reach target IOP and were therefore excluded.

~ One patient underwent cyclophotocoagulation to lower IOP and was therefore excluded.

a Mann–Whitney U-test for independent samples without normal distribution.

b Wilcoxon signed-rank test for dependent samples without normal distribution.

Matlach et al.

Matlach et al. BMC Ophthalmology 2013 13:1   doi:10.1186/1471-2415-13-1

Open Data