Abstract
Purpose: To investigate the time course of refractive and
corneal topographic changes in overnight hyperopic orthokeratology (OK) for
emmetropic presbyopes.
Methods: Sixteen adult emmetropic presbyopic subjects were
fitted with rigid hyperopic OK lenses (BE Enterprises, Brisbane,
Australia/Capricornia, Slacks Creek, Australia) targeted to correct +2.00 D, in
one eye only. The fellow eye acted as a non–lens-wearing control. Thirteen
subjects completed the study. Lenses were worn overnight for a 7-day period,
and changes in subjective refraction and corneal topography were measured in
the morning on lens removal (A.M.) and 8 hr after lens removal (P.M.).
Results: There were statistically significant changes from
baseline in all variables at all visits in lens-wearing eyes.