Table 1.
Baseline variables
| SB (n=50) | PPV (n=269) | P-value | |
|---|---|---|---|
| Patient characteristics | |||
| Age (years) | 54.3±12.2 (20–74) | 61.4±9.9 (35–101) | 0.001 |
| Gender, male:female (n; %) | 27:23 (54; 46%) | 93:176 (35; 65%) | 0.009 |
| BMI (kg/m2) | 26.6±5.4 (19.7–46.1) | 27.0±4.5 (17.7–45.0) | 0.666 |
| ASA classification (1–4) | 1.7±0.8 (1–3) | 2.1±0.8 (1–4) | 0.002 |
| Hypertonia | 15 (30%) | 111 (41%) | 0.135 |
| Diabetes mellitus | 5 (10%) | 34 (13%) | 0.601 |
| Coronary artery disease | 0 (0%) | 29 (11%) | 0.149 |
| Ophthalmic characteristics | |||
| Operation time (minutes) | 67.7±21.3 (32–133) | 77.9±29.6 (21–235) | 0.005 |
| Extent of retinal detachment in 1–4 quadrants | 30:19:1:0 | 81:136:44:8 | 0.001 |
| Pseudophakia (IOL) | 1 (2%) | 126 (47%) | ,0.001 |
| Vitreous hemorrhage | 3 (6%) | 78 (29%) | 0.001 |
| PVR | 2 (4%) | 30 (11%) | 0.122 |
| Axial length (mm) | 25.3±1.7 (22.9–30.8) | 25.2±1.7 (22.2–33.1) | 0.694 |
| Intraocular pressure (mmHg) | 14.6±4.2 (1–23) | 13.4±4.3 (1–31) | 0.042 |
| BCVA (logMAR) | 0.41±0.61 (HM 0.08) | 0.64±0.82 (NLP 0.18) | 0.039 |
Notes: Data are given as mean ± SD and range (min–max) or absolute number and proportion. For two-group comparisons, qualitative data were analyzed by two-factor χ2 test, ordinal measurement data by Mann–Whitney U-test, and continuous variables by Student’s t-test. P≤0.05 was considered statistically significant.
Abbreviations: ASA, American Society of Anesthesiologists; BCVA, best-corrected visual acuity; BMI, body mass index; HM, hand motion; IOL, intraocular lens; logMAR, logarithm of minimum angle of resolution; NLP, no light perception; PPV, pars plana vitrectomy; PVR, proliferative vitreoretinopathy; SB, scleral buckling; SD, standard deviation.