Patient demographics
Number of patients | 13 |
Male:female | 7:6 |
Number of eyes | 19 |
Age at insertion of Ahmed valve (months) | |
Mean | 96 |
Range | 9–189 |
Reduction in IOP (mm Hg) | |
Mean | 17.9 |
Range | 8–26 |
Previous surgical procedures | 9 |
Trabeculectomy alone | 1 |
Cycloablation alone | 3 |
Trabeculectomy + cycloablation | 5 |
Length of follow up (months) | |
Mean | 32 |
Range | 3–84 |