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. 2022 Nov 15;43(1):122–131. doi: 10.1111/opo.13070

FIGURE 6.

FIGURE 6

The time course of changes in axial length (AL) over the 3‐year study period for younger children (8–11 years of age) wearing orthokeratology (ortho‐k) lenses stratified by baseline AL: Subgroup 1 (AL < 24.5 mm), subgroup 2 (24.5 ≤ AL < 26 mm) and subgroup 3 (AL ≥ 26 mm). Data are expressed as the mean ± SEM. #Subgroup 1 versus subgroup 2, p < 0.01, *subgroup 1 versus subgroup 3, p < 0.01, $first year change in axial length (ΔAL) versus second year ΔAL, @first year ΔAL versus third year ΔAL, &second year ΔAL versus third year ΔAL.