
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 Utest for independent samples without normal distribution.

^{b} Wilcoxon signedrank test for dependent samples without normal distribution.