Baseline global flash multifocal electroretinographic parameters (mean±SD)
| OK | SV | |||
| Direct component (DC) | Amplitude (nV/deg2) | Peak time (ms) | Amplitude (nV/deg2) | Peak time (ms) |
| Ring 1 (1.6°) | 22.80±7.92 | 37.95±3.54 | 24.36±10.24 | 37.82±3.41 |
| Ring 2 (5.3°) | 9.57±3.25 | 38.13±3.29 | 10.12±4.53 | 38.18±3.25 |
| Ring 3 (10.1°) | 5.94±1.79 | 39.98±3.47 | 5.77±2.72 | 39.24±2.79 |
| Ring 4 (15.6°) | 4.78±2.07 | 39.90±2.95 | 4.28±1.67 | 39.40±2.51 |
| Ring 5 (21.8°) | 3.87±1.41 | 40.05±3.62 | 3.52±1.54 | 39.61±3.10 |
| Induced component (IC) | ||||
| Ring 1 (1.6°) | 35.64±15.38 | 33.16±5.48 | 31.87±10.30 | 33.44±4.45 |
| Ring 2 (5.3°) | 16.53±7.21 | 31.93±5.26 | 16.98±5.25 | 31.81±4.13 |
| Ring 3 (10.1°) | 12.31±4.66 | 27.84±4.07 | 11.81±4.48 | 29.22±5.69 |
| Ring 4 (15.6°) | 8.90±3.35 | 28.91±3.77 | 8.64±2.95 | 29.07±3.19 |
| Ring 5 (21.8°) | 5.42±2.03 | 28.80±4.34 | 5.32±2.01 | 28.86±4.12 |
There was no significant difference in any of the electroretinographic parameters between the two groups by repeated-measures analysis of variance.
DC amplitude: ring×treatment F=0.38, p=0.82; peak time: ring×treatment F=0.89, p=0.87.
IC amplitude: ring×treatment F=1.38, p=0.24; peak time: ring×treatment F=1.09, p=0.36.
OK, orthokeratology; SV, single vision.