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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