Fig. 2From: The effect of orthokeratology treatment zone decentration on myopia progressionOverview of lens decentration for all subjects. Overview of treatment zone Ortho-K lens decentration. The range between 0 and 360° was similar to the meridian degree set on a corneal topography map. Each circle outlines the distances of 0.5 and 1.0 mm to the corneal vertex normalBack to article page