## 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