Table 3

Visual acuity results
Phacotrabeculectomy Phacocanaloplasty P value
n BCVA (logMAR) P value n BCVA (logMAR) P value
Baseline 20 0.71 ± 0.87 19 0.48 ± 0.39 .835 a
Postoperative
  1 day 20 1.32 ± 0.95 <.0001 b 17* 1.17 ± 1.00 <.0001 b .537 a
  7 days 20 1.14 ± 1.00 <.0001 b 17* 0.78 ± 0.46 <.0001 b .729 a
  4 weeks 20 1.02 ± 0.93 <.0001 b 17* 0.38 ± 0.37 <.0001 b .004 a
  3 months 20 0.56 ± 0.66 <.0001 b 17* 0.28 ± 0.33 <.0001 b .104 a
  6 months 20 0.40 ± 0.69 <.0001 b 17* 0.27 ± 0.39 <.0001 b .821a
  12 months 19~ 0.43 ± 0.69 <.0001 b 15+ 0.29 ± 0.33 .001 b .607 a

Values are means ± SD (standard deviation).

n sample size, BCVA best corrected visual acuity, logMAR log of the minimum angle of resolution.

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