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Table 2 Comparison between eyes with and without posterior segment complications of Ahmed valve implantation

From: Posterior segment complications of Ahmed valve implantation

 

Eyes with posterior segment complication

Eyes without posterior segment complication

P

Male (%)

60.2

51.1

0.34**

Medical History

Diabetes mellitus (n)

44

52

0.49**

Hypertension (n)

71

28

0.03**

Age (years)

74.3 ± 15.6

62.8 ± 13.4

0.01*

Mean preoperative BCVA (LogMAR±SD, Snellen equivalent)

0.7 ± 0.4 (20/102)

0.6 ± 0.3 (20/89)

0.61*

Mean final postoperative BCVA (LogMAR±SD, Snellen equivalent)

1.4 ± 0.5 (20/537)

0.7 ± 0.3 (20/115)

0.004*

Mean preoperative IOP (mmHg)

37.4 ± 11.8

39.7 ± 12.4

0.73*

Mean final postoperative IOP (mmHg)

15.5 ± 4.7

16.2 ± 3.4

0.58*

Postoperative hypotony (IOP < 6 mmHg) (%)

85.8

32.4

0.001**

  1. * Independent samples t test was used
  2. **Chi-square test was used