Table 1.
Preoperative diagnosis of the studied groups
| Preoperative diagnosis | Group 1 20-gauge Claes system (n = 34) |
Group 2 23-gauge (n = 32) |
Group 3 20- and 23-gauge (n = 27) |
Group 4 Conventional 20-gauge (n = 36) |
||||
|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | |
| Vitreous hemorrhage | 11 | 32.3 | 10 | 31.2 | 7 | 25.9 | 6 | 16.6 |
| Tractional retinal detachment | 12 | 35.3 | 7 | 21.8 | 10 | 37.0 | 5 | 13.8 |
| Tractional rhegmatogenous retinal detachment | 2 | 5.8 | 2 | 6.2 | 3 | 11.1 | 2 | 5.5 |
| Vitreomacular traction and cystoid macular edema | 1 | 2.9 | 3 | 9.3 | 1 | 3.7 | 0 | 0 |
| Macular pucker | 2 | 5.8 | 1 | 3.1 | 1 | 3.7 | 0 | 0 |
| Macular hole | 1 | 2.9 | 2 | 6.2 | 3 | 11.1 | 8 | 22.2 |
| Rhegmatogenous retinal detachment | 2 | 5.8 | 5 | 15.6 | 0 | 0 | 14 | 38.8 |
| Vitreous opacification | 2 | 5.8 | 1 | 3.1 | 2 | 7.4 | 0 | 0 |
| Posterior dislocated lens | 1 | 2.9 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dislocated intraocular lens | 0 | 0 | 1 | 3.1 | 0 | 0 | 0 | 0 |
| Intraocular foreign body | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2.7 |
| Total | 34 | 26.3 | 32 | 24.8 | 27 | 20.9 | 36 | 27.9 |