Figure 1.

Simplified diagram of a 10.60 mm diameter Ortho-K lens resting on the 18-year-old participant’s right cornea. The lens has a base curve of 8.80 mm, a reverse curve of 6.80 mm, alignment curves of 7.80 mm and 8.00 mm, and a peripheral curve of 11.50 mm. Front curves are 8.70 mm, 8.10 mm, and 4.00 mm from the centre to the edge, respectively. Lens decentration is not considered in this figure for display purposes.