Clinical Study
Graft Survival after Penetrating Keratoplasty in Cases of Trabeculectomy versus Ahmed Valve Implant
Table 1
Characteristics of the included patients of trabeculectomy and Ahmed glaucoma valve groups before the glaucoma surgery.
| | | Trabeculectomy group | Ahmed valve group | value |
| | Age (years) | 37.3 ± 9.6 (19–60) | 35.7 ± 11.2 (20–61) | 0.521 |
| | Sex (male : female) | 11 : 9 | 10 : 10 | 0.752 |
| | Diabetes mellitus | 2 (10%) | 2 (10%) | 1.000 |
| | Hypertension | 5 (25%) | 4 (20%) | 0.705 |
| | Indication of keratoplasty | | | 0.739 | | Microbial or fungal keratitis | 9 (45%) | 8 (40%) | | | Chemical burn | 5 (25%) | 7 (35%) | | | Trauma | 4 (20%) | 2 (10%) | | | Others | 2 (10%) | 3 (15%) | |
| | Pre-op BCVA (logMAR) | 1.40 ± 0.55 (0.9–2.4) | 1.30 ± 0.50 (0.8–2.1) | 0.655 |
| | Pre-op IOP (mmHg) | 31.22 ± 4.91 (26–40) | 33.54 ± 4.59 (29–42) | 0.375 |
| | Pre-op number of medications | 2.11 ± 0.55 | 2.34 ± 0.61 | 0.410 |
| | Pre-op endothelial count (cells/mm2) | 2812 ± 270 (2400–3210) | 2776 ± 291 (2450–3120) | 0.288 |
| | Pre-op lens status | | | 0.881 | | Phakic | 4 | 3 | | | Pseudophakic | 12 | 12 | | | Aphakic | 4 | 5 | |
| | Time interval from PKP to glaucoma surgery (months) | 9.41 ± 7.22 (2–30) | 8.66 ± 6.51 (2–28) | 0.321 |
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Using the Mann–Whitney test or the chi-square test where appropriate. |
