Table 1.
Baseline demographic and preoperative characteristics
| Variable | Valved (n=36) | Nonvalved (n=31) | P-value |
|---|---|---|---|
| Age, mean years (SD) | 58.70 (18.71) | 52.07 (19.53) | 0.119* |
| Male, n (%) | 28 (78) | 21 (68) | 0.414** |
| Right eye, n (%) | 18 (50) | 15 (48) | 1.000** |
| Lens | |||
| Pseudophakia, n (%) | 22 (61) | 15 (48) | |
| Phakia, n (%) | 11 (31) | 14 (45) | |
| Aphakia, n (%) | 3 (8) | 2 (6) | 0.516** |
| Macula off, n (%) | 30 (83) | 25 (81) | 1.000** |
| Previous history of RD in the presenting eye, n (%) | 24 (67) | 22 (71) | 0.795** |
| Previous placement of scleral buckle in the presenting eye, n (%) | 12 (33) | 7 (23) | 0.419 |
| Grade C PVR, n (%) | 36 (100) | 31 (100) | |
| Preoperative BCVA | |||
| logMAR, mean (SD) | 1.83 (0.84)*** | 2.06 (0.83) | 0.127* |
| Snellen equivalent | 20/1,352 | 20/2,296 | |
Notes:
*
P-value based on Wilcoxon rank sum test of difference between medians.
**
P-value based on Fisher’s exact test of difference between proportions.
***
Preoperative BCVA only available in 35 of 36 eyes in the valved group.
Abbreviations: RD, retinal detachment; PVR, proliferative vitreoretinopathy; BCVA, best-corrected visual acuity; logMAR, logarithm of the minimum angle of resolution.