Gas group | Standard groups | ||
Group A phakic | Group B pseudophakic/aphakic | ||
No of patients | 51 | 21 | 15 |
Male | 29 | 13 | 6 |
Female | 22 | 15 | |
Race | |||
Caucasian | 49 | 27 | 15 |
Black | 2 | 1 | |
Glaucoma type | |||
Primary open angle | 18 | 5 | 3 |
Pseudoexfoliation | 3 | 2 | 1 |
Uveitic | 12 | 7 | 5 |
Post-vitrectomy | 7 | ||
Aniridia | 4 | ||
Angle closure | 4 | 2 | 2 |
Anterior segment dysgenesis | 2 | 5 | 1 |
Rubeotic | 2 | 1 | |
ICE syndrome | 1 | 1 | |
Post penetrating keratoplasty | 2 | ||
Sturge Weber | 1 | ||
Traumatic | 1 | 2 | |
Previous surgery | |||
Cataract surgery | 50 | 0 | 15 |
Vitrectomy | 12 | 1 | 1 |
Trabeculectomy | 39 | 21 | 7 |
Ahmed valve | 6 | 1 | |
Deep sclerectomy | 2 | ||
Cyclodiode | 1 | ||
Lens status | |||
Phakic | 1 | 28 | |
Aphakic | 6 | 4 | |
Pseudophakic | 44 | 11 | |
Ahmed valve model | |||
Model FP-7 | 7 | 3 | 0 |
Model S-2 | 44 | 25 | 15 |
Tube cover | |||
No cover | 0 | 2 | 1 |
Tutoplast | 6 | 2 | – |
Tutopatch | 6 | 2 | – |
Donor sclera | 21 | 15 | 11 |
Scleral rotation flap | 18 | 7 | 3 |
Mean age, years | 66.5±17.9 (range 22–90) | 50.6±17.3 (range 19–78) | 65.7±14.6 (range 36–80) |
Corneal thickness | 603.8±79.6 (527–1000) | 576.6±65.0 (515–800) | 630.0±79.2 (523–745) |
No of previous operations | 2.4±0.9 (range 1–5) | 0.9±0.8 (range 0–2) | 2.1±0.8 (range 1–3) |
Presenting IOP (mm Hg) | 43.1±8.2 (range 24–62) | 40.1±10.7 (range 24–64) | 42.5±7.2 (range 32–60) |
ICE, iridocorneal endothelial; IOP, intraocular pressure.