Data collection visits | Baseline | 1-month visit* | Every 6 months |
Refraction (subjective and objective) | |||
Pre-cycloplegic | X | X | X |
Post-cycloplegic | X | X | |
High-contrast VA (habitual and best corrected) | |||
Pre-cycloplegic | X | X | X |
Post-cycloplegic | X | X | |
Biomicroscopy | X | X | X |
Corneal topography | X | X | X |
Axial length | X | X | X |
Ocular aberration | X | X | |
Corneal biomechanics | X | X | |
Anterior OCT | X | X | |
Posterior OCT | X | X |
*Only for subjects in both ortho-k groups.
OCT, optical coherence tomography; VA, visual acuity.