Table 1.
Group Characteristics (Demographic and Preoperative Parameters) for Patients from ILM Flap and ILM Peeling Groups
| Characteristic | ILM Flap | ILM Peeling | p |
|---|---|---|---|
| n = 48 | n = 61 | ||
| Age, Me (Q1; Q3) | 70.43 (67.42; 76.15) | 63.84 (70.54; 74.16) | 0.557a |
| Eye (left), n (%) | 23 (47.9) | 28 (45.9) | 0.987c |
| Sex (female), n (%) | 31 (64.6) | 34 (55.7) | 0.461c |
| High myopia, n (%) | 7 (14.6) | 9 (14.8) | > 0.999c |
| Intraoperative gas tamponade, n (%) | |||
| C3F8 | 1 (2.1) | 10 (16.4) | 0.021 |
| SF6 | 47 (97.9) | 51 (83.6) | |
| Phacoemulsification intraoperative, n (%) | 18 (37.50) | 22 (36.1) | > 0.999c |
| Preoperative macular hole diameter at its base, M ± SD | 885.61 ± 239.58 | 830.36 ± 351.93 | 0.337b |
| Macular hole size (µm), M ± SD | 421.90 ± 158.53 | 322.61 ± 159.62 | 0.002b |
| Preoperative retinal thickness temporal, M ± SD | 401.69 ± 69.48 | 383.93 ± 72.54 | 0.197b |
| Preoperative retinal thickness nasal, M ± SD | 418.60 ± 58.99 | 410.07 ± 71.53 | 0.496b |
| VMT, n (%) | 11 (22.9) | 19 (31.1) | 0.460c |
| Macular hole (MH) grade, n (%) | |||
| Large | 24 (50.0) | 20 (32.8) | 0.017c |
| Medium | 18 (37.5) | 19 (31.1) | |
| Small | 6 (12.5) | 22 (36.1) | |
| Idiopathic vs secondary macular hole, n (%) | |||
| Idiopathic macular hole | 42 (87.5) | 45 (73.8) | 0.125c |
| Secondary macular hole | 6 (12.5) | 16 (26.2) | |
| Lens status pre-op, n (%) | |||
| Phakic | 29 (60.4) | 47 (77.0) | 0.089 |
| Aphakic | 2 (4.2) | 0 (0.0) | |
| Pseudophakic | 17 (35.4) | 14 (23.0) | |
| VA at baseline (logmar), Me (Q1; Q3) | 0.75 (0.50; 1.30) | 0.70 (0.60; 1.00) | 0.822a |
| Surgery duration (min), Me (Q1; Q3) | 34.50 (30.00; 40.00) | 34.00 (29.00; 45.00) | 0.985a |
| Dye, n (%) | |||
| BB | 9 (18.8) | 60 (98.4) | < 0.001c |
| DB | 39 (81.3) | 1 (1.6) |
Notes: High myopia: if it exceeded 6 dioptres or if an axial eye length was > 26 mm; p < 0.05 was considered statistically significant; n (%) was given for qualitative variables, M ± SD or Median with quartile 1 and 3 for quantitative variables; Analyses were made with Mann-Whitey’s U-testa or Student’s t-testb (quantitative variables), Fisher’s exact test or chi-square testc (qualitative variables).
Abbreviations: M, mean; SD, standard deviation; Me, median; Q1, Q3, quartile 1 and 3; n, number of subjects in a group. ILM, membrana limitans interna; VMT, vitreomacular traction; RT, retinal thickness; VA, visual acuity; BB, brilliant blue; DB, dual blue.