Table 1. Characteristics of each group.
| Group 1 (inverted ILM flap) |
Group 2 (ILM peeling) |
P value | |
|---|---|---|---|
| Number of eyes | 46 | 44 | |
| Age (years) | 65.6 ± 8.1 | 65.5 ± 11.3 | 0.97 |
| Sex (F:M) | 27 : 19 | 32 : 12 | 0.16 |
| Laterality (R:L) | 18 : 28 | 20 : 24 | 0.54 |
| MH duration (months) | 7.8 ± 18.3 | 7.9 ± 36.4 | 0.98 |
| Procedure | 0.23 | ||
| Vitrectomy with cataract surgery | 40 | 34 | |
| Only vitrectomy | 6 | 10 | |
| IOP (mmHg) | 14.7 ± 4.0 | 15.0 ± 3.5 | 0.53 |
| Axial length (mm) | 24.2 ± 1.8 | 24.4 ± 2.3 | 0.72 |
| MH diameter (μm) | 491.5 ± 135.9 | 465.9 ± 129.5 | 0.36 |
| MH stage (1:2:3:4) | 0:5:5:36 | 1:7:5:31 | 0.56 |
| MH closure success: failure | 46 : 0 | 41 : 3 | 0.04 |
| VA (logMAR) | |||
| Preoperative | 0.8 ± 0.3 | 0.7 ± 0.3 | 0.06 |
| 1M-postoperative | 0.5 ± 0.3 | 0.4 ± 0.4 | 0.25 |
| 6M-postoperative | 0.4 ± 0.3 | 0.3 ± 0.3 | 0.42 |
| OCT findings | |||
| 1M-postoperative IS/OS disruption (n, %) | 41, 89 | 33, 75 | 0.13 |
| 6M-postoperative IS/OS disruption (n, %) | 14, 30 | 22, 50 | 0.80 |
| 1M-postoperative ELM disruption (n, %) | 26, 57 | 16, 36 | 0.08 |
| 6M-postoperative ELM disruption (n, %) | 7, 15 | 12, 27 | 0.72 |
ILM = internal limiting membrane, MH = macular hole, IOP = intraocular pressure, VA = visual acuity, logMAR = logarithm of minimum angle of resolution, OCT = optical coherence tomography, IS/OS = photoreceptor inner and outer segment, ELM = external limiting membrane