Table 3.
Overview of the Diurnal Variation Amplitude in Axial Length and Choroidal Thickness in the Three Myopic Refractive Groups
| Mean ± SD Diurnal Variation Amplitude (µm) | ||||
|---|---|---|---|---|
| All Subjects (n = 34) | Emmetropes (n = 6) | Myopes (n = 16) | High Myopes (n = 12) | |
| Axial length | 17.8 ± 11 | 21.3 ± 8.5 | 18.8 ± 9.7 | 14.5 ± 12.7*† |
| Choroidal thickness (ChT) | 17.6 ± 15 | 21.4 ± 15 | 19.0 ± 17 | 14.6 ± 11*† |
| ChT: Eccentricity | ||||
| Fovea (0.5 mm) | 18.5 ± 15 | 23 ± 15 | 19 ± 17 | 13 ± 10*† |
| Parafovea (1 mm) | 18.8 ± 15 | 24 ± 15 | 20 ± 17 | 13 ± 8*† |
| Perifovea (1 mm) | 18.9 ± 14 | 23 ± 16 | 18 ± 14 | 15 ± 12 |
| Near-periphery (1.5 mm) | 17.5 ± 15 | 18 ± 14 | 18 ± 16 | 16 ± 13 |
| Periphery (2 mm) | 17.7 ± 16 | 18 ± 13 | 20 ± 17 | 16 ± 13 |
| ChT: Quadrant | ||||
| Superior | 16.0 ± 12 | 19.9 ± 13 | 16.5 ± 13 | 11.6 ± 8* |
| Temporal | 20.2 ± 17 | 22.5 ± 13 | 22.3 ± 19 | 15.8 ± 12*† |
| Inferior | 15.5 ± 12 | 18.9 ± 15 | 14.7 ± 12 | 12.8 ± 8 |
| Nasal | 22.5 ± 18 | 25.1 ± 18 | 23.1 ± 19 | 19.2 ± 15 |
Notes: *Significantly less diurnal variation amplitude in the refractive group compared to the emmetropic group (p < 0.05) with adjustment for multiple comparisons (Bonferroni). †Significantly less diurnal variation amplitude in the high myopic refractive group compared to the myopic group (p < 0.05) with adjustment for multiple comparisons (Bonferroni).