Table 4.
Pearson's correlations (R2) between quantitative fovea parameters in OCT morphotypes of ERM, pre- and postoperative BCVA, and postoperative visual acuity difference with designation of the corresponding significance level (p value). ∗p < 0,05, ∗∗p < 0,01, and ∗∗∗p < 0,001.
| OCT morphotypes | Visual acuity | Quantitative fovea parameters | |||
|---|---|---|---|---|---|
| CFT, µm | CONLT, µm | CINLT, µm | MFT, µm | ||
| Group 1, n = 36 | Preoperative BCVA | −0,066, p=0,702 | −0,038, p=0,824 | 0,084, p=0,625 | −0,091, p=0,597 |
| Postoperative BCVA | 0,168, p=0,329 | 0,149, p=0,386 | −0,021, p=0,905 | 0,166, p=0,332 | |
| Visual acuity difference | 0,22, p=0,197 | 0,186, p=0,277 | −0,064, p=0,713 | 0,231, p=0,176 | |
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| Group 2, n = 37 | Preoperative BCVA | −0,162, p=0,337 | −0,146, p=0,388 | −0,111, p=0,512 | −0,19, p=0,259 |
| Postoperative BCVA | −0,188, p=0,265 | −0,134, p=0,43 | −0,092, p=0,587 | −0,219, p=0,192 | |
| Visual acuity difference | −0,056, p=0,743 | −0,012, p=0,944 | −0,01, p=0,995 | −0,064, p=0,706 | |
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| Group 3, n = 80 | Preoperative BCVA | −0,248, p=0, 026∗ | −0,065, p=0,569 | −0,135, p=0,233 | −0,318, p=0, 004∗∗ |
| Postoperative BCVA | −0,066, p=0,559 | −0,136, p=0,229 | 0,11, p=0,332 | −0,077, p=0,496 | |
| Visual acuity difference | 0,067, p=0,556 | −0,115, p=0,309 | 0,186, p=0,099 | 0,102, p=0,369 | |
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| Group 4, n = 33 | Preoperative BCVA | −0,116, p=0,519 | −0,08, p=0,658 | −0,005, p=0,978 | −0,355, p=0,053 |
| Postoperative BCVA | 0,045, p=0,803 | 0,025, p=0,891 | −0,162, p=0,369 | 0,076, p=0,673 | |
| Visual acuity difference | 0,02, p=0,91 | 0,013, p=0,944 | −0,192, p=0,284 | 0,167, p=0,353 | |
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| Group 5, n = 15 | Preoperative BCVA | −0,852, p < 0, 001∗∗∗ | −0,763, p < 0, 001∗∗∗ | −0,683, p < 0, 001∗∗∗ | −0,799, p < 0, 001∗∗∗ |
| Postoperative BCVA | −0,604, p=0, 017∗ | −0,534, p=0, 04∗ | −0,466, p=0,08 | −0,687, p=0, 005∗∗ | |
| Visual acuity difference | −0,07, p=0,804 | −0,052, p=0,855 | −0,03, p=0,915 | −0,236, p=0,397 | |
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| Groups 1–3, n = 153 | Preoperative BCVA | −0,218, p=0, 007∗∗ | −0,163, p=0, 047∗ | −0,112, p=0,169 | −0,254, p=0, 002∗∗ |
| Postoperative BCVA | −0,068, p=0,402 | −0,163, p=0, 044∗ | 0,086, p=0,289 | −0,051, p=0,531 | |
| Visual acuity difference | 0,052, p=0,522 | −0,068, p=0,407 | 0,15, p=0,064 | 0,097, p=0,234 | |
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| Groups 4–5, n = 48 | Preoperative BCVA | −0,503, p < 0, 001∗∗∗ | −0,499, p < 0, 001∗∗∗ | −0,329, p=0, 024∗ | −0,528, p < 0, 001∗∗∗ |
| Postoperative BCVA | −0,259, p=0,078 | −0,27, p=0,066 | −0,189, p=0,204 | −0,413, p=0, 004∗ | |
| Visual acuity difference | 0,087, p=0,563 | 0,069, p=0,643 | 0,032, p=0,828 | −0,077, p=0,606 | |
ERM: epiretinal membrane, OCT: optical coherence tomography, BCVA: best-corrected decimal far visual, ONL: outer retinal nuclear layer, INL: inner retinal nuclear layer, IPL: inner plexiform retinal layer, CFT: central foveolar retinal thickness, MFT: maximum foveolar retinal thickness, CONLT: central foveolar ONL thickness, CINLT: central foveolar INL thickness, CIPLT: central foveolar IPL thickness, and n: number of patient eyes.