Table 1.
Patients’ Characteristics
| Group | ILM | ERM | P Value | PVR | P Value |
|---|---|---|---|---|---|
| n | 12 | 13 | 19 | ||
| Age at surgery | 71.1 (61.7-80.7) | 70.9 (62.6-83.3) | 0.99 | 59.6 (15.5-82.4) | 0.28 |
| Sex | 0.07 | 0.06 | |||
| Male | 4 (33.3%) | 9 (69.2%) | 13 (68.4%) | ||
| Female | 8 (66.7%) | 4 (30.8%) | 6 (31.6%) | ||
| Lens | |||||
| Phakic | 7 (58.3%) | 9 (69.2%) | 0.57 | 6 (31.6%) | 0.14 |
| Pseudophakic/aphakic | 5 (41.7 %) | 4 (30.8%) | 13 (68.4%) | ||
| Primary PPV | 11 (91.7%) | 13 (100.0%) | 0.29 | 7 (36.8%) | 0.003 |
| Hx of trauma | – | – | 2 (10.5%) | ||
| Hx of chronic RD | – | – | 5 (26.3%) | ||
| Revision PPV | 1 (8.3%) | 0 (0.0%) | 0.29 | 12 (63.2%) | 0.003 |
| Without oil | 1 (8.3%) | – | 2 (10.5%) | ||
| With oil | – | – | 10 (52.6%) | ||
| Staining agent | 12 (100.0%) | 13 (100.0%) | 1.00 | 10 (52.6%) | 0.005 |
| PVR grading | |||||
| C1 | – | – | 1 (5.3%) | ||
| C2 | – | – | 13 (68.4%) | ||
| C3 | – | – | 5 (26.3%) |
Age at surgery is shown as mean and minimum/maximum. The percentage of patients undergoing primary pars plana vitrectomy (PPV) with a history (Hx) of trauma or long-standing chronic retinal detachment (RD) is reported. PVR patients undergoing revision PPV for retinal detachment despite initial surgical repair are subdivided into eyes that were filled with or without silicone oil prior to the procedure. The percentage of processes in which a staining agent (MembraneBlue-Dual, D.O.R.C. International, Zuidland, The Netherlands or Brillant Peel, Fluoron GmbH, Ulm, Germany) was used is indicated. Grading of proliferative vitreoretinopathy (PVR) was performed according to the updated Retina Society Classification (1991) (1). The P value was calculated using Mann-Whitney test for age and Chi-square test for sex, lens, blue dye, and primary and revision PPV.
PPV, pars plana vitrectomy; Hx, history; RD, retinal detachment; PVR, proliferative vitreoretinopathy.