Fig. 2

Distribution of changes in SER (a) and AL (b) of HAL and ESVL groups during 5 follow-up years, and distribution of SER (c) and AL (d) in HAL and ESVL groups after 5 years. AL, axial length; SER, spherical equivalent refraction; HAL, spectacle lenses with highly aspherical lenslets; ESVL, extrapolated single-vision spectacle lenses