Fig. 3From: Relative peripheral refraction across 4 meridians after orthokeratology and LASIK surgeryThree-dimensional representation of axial and peripheral RPRE (relative M) across horizontal (70° central in 5° steps), vertical (30° central in 5° steps) and two oblique (40° central in 5° steps) meridians in myopic healthy eyes before (a) and after (b) LASIK surgery and respective differences (c)Back to article page