Correlation between baseline global flash multifocal electroretinography and axial length elongation at 12 and 24 months
| 12-month axial elongation | 24-month axial elongation | |||||
| Partial correlation (controlled for baseline SER and age) | Fisher’s test R-to-Z transformation | Partial correlation (controlled for baseline SER and age) | Fisher’s test R-to-Z transformation | |||
| OK(ROK(p)) (N=46) | SV(RSV(p)) (N=32) | ROK vs RSV(Z(p)) | OK(ROK(p)) (N=43) | SV(RSV(p)) (N=27) | ROK vs RSV(Z(p)) | |
| Direct component | ||||||
| Ring 1 (1.6°) | −0.03 (0.86) | −0.25 (0.18) | 0.94 (0.34) | 0.05 (0.76) | −0.47 (0.02) | 2.17 (0.03) |
| Ring 2 (5.3°) | 0.01 (0.97) | −0.16 (0.42) | 0.71 (0.48) | 0.10 (0.54) | −0.42 (0.04) | 2.12 (0.03) |
| Ring 3 (10.1°) | −0.15 (0.32) | −0.24 (0.21) | 0.39 (0.70) | 0.14 (0.37) | −0.38 (0.06) | 2.10 (0.04) |
| Ring 4 (15.6°) | 0.08 (0.59) | −0.12 (0.52) | 0.84 (0.40) | 0.16 (0.30) | −0.49 (0.02) | 2.62 (0.01) |
| Ring 5 (21.8°) | −0.11 (0.50) | −0.24 (0.22) | 0.56 (0.58) | 0.04 (0.79) | −0.56 (0.004) | 2.61 (0.02) |
| Induced component | ||||||
| Ring 1 (1.6°) | −0.19 (0.21) | −0.44 (0.02) | 1.17 (0.24) | 0.15 (0.33) | −0.44 (0.03) | 2.41 (0.02) |
| Ring 2 (5.3°) | −0.10 (0.53) | −0.55 (0.002) | 2.16 (0.03) | 0.11 (0.50) | −0.32 (0.13) | 1.71 (0.08) |
| Ring 3 (10.1°) | −0.11 (0.49) | −0.05 (0.79) | −0.25 (0.80) | 0.05 (0.75) | 0.12 (0.58) | −0.27 (0.79) |
| Ring 4 (15.6°) | −0.04 (0.79) | −0.07 (0.74) | 0.13 (0.90) | 0.09 (0.58) | 0.03 (0.90) | 0.23 (0.81) |
| Ring 5 (21.8°) | 0.05 (0.76) | 0.08 (0.68) | −0.13 (0.90) | 0.18 (0.26) | −0.08 (0.71) | 1.02 (0.31) |
| ROK: correlation coefficient for the OK group | RSV: correlation coefficient for the SV group | |||||
Bold denotes statistical significance after Hochberg’s adjustment.
OK, orthokeratology; SER, spherical equivalent refraction; SV, single vision.