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A: Comparison the effect on SFCT between OK and SVL in myopic eyes; B: Comparison the effect on SFCT between OK and 0.01% atropine in myopic eyes; C: Comparison the effect on SFCT between OKA and OK in myopic eyes. SFCT: Sub-foveal choroidal thickness; OK: Orthokeratology; SVL: Single vision lens; OKA: Orthokeratology combined with 0.01% atropine.
