Table 1.
Main preoperative characteristics in groups G2, G3, and G4.
| Eyes with reattached retina and visual loss (G2) | Phakic eyes with reattached retina and visual loss (G3) | Pseudophakic eyes with reattached retina and visual loss (G4) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| n (%) | 95%CI | p value∗ | n (%) | 95%CI | p value∗ | n (%) | 95%CI | p value∗ | |
| Previous PVR | |||||||||
| No | 24 (45.3%) | 31.9%; 58.7% | 0.1166 | 19 (48.7%) | 32.7%; 65% | 0.3842 | 5 (35.7%) | 22.8%; 48.6% | 0.1832 |
| A | 17 (32.1%) | 19.5%; 44.6% | 0.2695 | 13 (33.3%) | 19.6%; 50.3% | 0.2799 | 4 (28.6%) | 16.4%; 40.7% | 0.9723 |
| B | 12 (22.6%) | 11.4%; 34% | 0.5488 | 7 (17.9%) | 8.1%; 34.1% | 1 | 5 (35.7%) | 22.8%; 48.6% | 0.1886 |
| Total | 53 (100%) | 39 (100%) | 14 (100%) | ||||||
| Retinal break | |||||||||
| Tear | 38 (71.7%) | 59.6%; 83.8% | 0.9803 | 28 (71.8%) | 54.9%; 84.5% | 1 | 10 (71.4%) | 59.3%; 83.6% | 1 |
| Hole | 12 (22.6%) | 11.4%; 33.9% | 0.8577 | 9 (23.1%) | 11.7%; 39.7% | 0.866 | 3 (21.4%) | 10.4%; 32.5% | 1 |
| Dialysis | 0 (0%) | 0%; 8.4% | 0.61 | 0 (0%) | 0%; 11.2% | 0.7774 | 0 (0%) | 0%; 26.8% | 1 |
| Giant tear | 2 (3.8%) | 0%; 8.9% | 1 | 1 (2.6%) | 0.1%; 15.1% | 0.9861 | 1 (7.1%) | 0.2%; 14.1% | 1 |
| Not visible | 1 (1.9%) | 0%; 5.6% | 1 | 1 (2.6%) | 0.1%; 15.1% | 1 | 0 (0%) | 0%; 26.8% | 1 |
| Total | 53 (100%) | 39 (100%) | 14 (100%) | ||||||
| Type of break | |||||||||
| Single | 27 (52.9%) | 39.2%; 66.6% | 0.7103 | 20 (52.6%) | 36.1%; 68.7% | 0.7509 | 7 (53.9%) | 40.2%; 67.5% | 1 |
| Multiple | 22 (43.1%) | 29.5%; 56.7% | 0.6979 | 16 (42.1%) | 26.7%; 59.1% | 0.8708 | 6 (46.2%) | 32.5%; 59.8% | 0.8359 |
| Posterior rupture | 1 (2%) | 0%; 5.8% | 1 | 1 (2.6%) | 0.1%; 15.4% | 0.9477 | 0 (0%) | 0%; 28.3% | 1 |
| Not visible | 1 (2%) | 0%; 5.8% | 1 | 1 (2.6%) | 0.1%; 15.4% | 1 | 0 (0%) | 0%; 28.3% | 1 |
| Total | 51 (100%) | 38 (100%) | 13 (100%) | ||||||
| Size of breaks (clock hours) | |||||||||
| Not visible | 1 (1.9%) | 0%; 5.7% | 0.9947 | 1 (2.6%) | 0.1%; 15.4% | 1 | 0 (0%) | 0%; 26.8% | 1 |
| 0-1 | 31 (59.6%) | 46.3%; 73% | 0.3571 | 22 (57.9%) | 40.9%; 73.3% | 0.3341 | 9 (64.3%) | 51.3%; 77.3% | 1 |
| 2-3 | 14 (26.9%) | 14.9%; 39% | 0.6371 | 11 (28.9%) | 16%; 46.1% | 0.5175 | 3 (21.4%) | 10.3%; 32.6% | 1 |
| >3 | 6 (11.5%) | 2.9%; 20.2% | 0.3815 | 4 (10.5%) | 3.4%; 25.7% | 0.6698 | 2 (14.3%) | 4.8%; 23.8% | 0.6357 |
| Total | 52 (100%) | 38 (100%) | 14 (100%) | ||||||
| Previous vitreous hemorrhage | |||||||||
| No | 44 (83%) | 72.9%; 93.1% | 0.6852 | 32 (82.1%) | 65.9%; 91.9% | 0.6451 | 12 (85.7%) | 76.3%; 95.1% | 1 |
| Yes | 9 (17%) | 6.9%; 27.1% | 0.6852 | 7 (17.9%) | 8.1%; 34.1% | 0.6451 | 2 (14.3%) | 4.9%; 23.7% | 1 |
| Total | 53 (100%) | 39 (100%) | 14 (100%) | ||||||
| Extension RD (quadrants) | |||||||||
| 0-1 | 21 (39.6%) | 26.5%; 52.8% | 0.9019 | 16 (41%) | 26%; 57.8% | 1 | 5 (35.7%) | 22.8%; 48.6% | 0.8724 |
| 2-3 | 32 (60.4%) | 47.2%; 73.6% | 0.9019 | 23 (59%) | 42.2%; 74% | 1 | 9 (64.3%) | 51.4%; 77.2% | 0.8724 |
| 4 | 0 (0%) | 0%; 8.4% | 1 | 0 (0%) | 0%; 11.2% | 1 | 0 (0%) | 0%; 26.8% | 1 |
| Total | 53 (100%) | 39 (100%) | 14 (100%) | ||||||
| Previous aphakic | |||||||||
| No | 39 (73.6%) | 61.7%; 85.5% | 0.6412 | 39 (100%) | 88.8%; 100% | 0.0001 | 0 (0%) | 0%; 26.8% | <0.0001 |
| Yes | 14 (26.4%) | 14.6%; 38.3% | 0.6412 | 0 (0%) | 0%; 11.2% | 0.0001 | 14 (100%) | 73.2%; 100% | <0.0001 |
| Total | 53 (100%) | 39 (100%) | 14 (100%) | ||||||
| PVD | |||||||||
| Unknown | 11 (20.8%) | 9.8%; 31.7% | 0.1176 | 8 (20.5%) | 9.9%; 36.9% | 0.1837 | 3 (21.4%) | 10.4%; 32.5% | 0.59 |
| No | 13 (24.5%) | 12.9%; 36.1% | 0.8361 | 10 (25.6%) | 13.6%; 42.4% | 0.7692 | 3 (21.4%) | 10.4%; 32.5% | 1 |
| Yes | 29 (54.7%) | 41.3%; 68.1% | 0.2562 | 21 (53.8%) | 37.4%; 69.6% | 0.4108 | 8 (57.1%) | 43.8%; 70.5% | 0.5698 |
| Total | 53 (100%) | 39 (100%) | 14 (100%) | ||||||
| Myopia | |||||||||
| No | 11 (27.5%) | 13.7%; 41.3% | 0.5078 | 9 (29%) | 14.9%; 48.2% | 0.719 | 2 (22.2%) | 9.3%; 35.1% | 0.707 |
| ≤5 Dp | 15 (37.5%) | 22.5%; 52.5% | 0.662 | 12 (38.7%) | 22.4%; 57.7% | 0.6276 | 3 (33.3%) | 18.7%; 47.9% | 1 |
| >5 Dp | 14 (35%) | 20.2%; 49.8% | 0.9518 | 10 (32.3%) | 17.3%; 51.5% | 1 | 4 (44.4%) | 29%; 59.8% | 0.722 |
| Total | 40 (100%) | 31 (100%) | 9 (100%) | ||||||
| Previous VA | |||||||||
| <20/100 | 0 (0%) | 0%; 8.4% | 0.0118 | 0 (0%) | 0%; 11.2% | 0.0362 | 0 (0%) | 0%; 26.8% | 0.32 |
| 20/100–20/40 | 9 (17%) | 6.9%; 27.1% | 0.4638 | 7 (17.9%) | 8.1%; 34.1% | 0.6659 | 2 (14.3%) | 4.9%; 23.7% | 0.702 |
| ≥20/40 | 44 (83%) | 72.9%; 93.1% | 0.0111 | 32 (82.1%) | 65.9%; 91.9% | 0.0449 | 12 (85.7%) | 76.3%; 95.1% | 0.1902 |
| Total | 53 (100%) | 39 (100%) | 14 (100%) | ||||||
∗Differences from G1: macula-on series.
n (%): number and percentage of patients in Retina 1 Project and macula-on groups G1, G2, G3, and G4. G1: macula-on group, G2: phakic and pseudophakic patients, G3: phakic patients, and G4: pseudophakic patients; CI: confidence interval; PVR: proliferative vitreoretinopathy; PVD: posterior vitreous detachment. VA: visual acuity, best corrected visual acuity.