Novel application of multispectral refraction topography in the observation of myopic control effect by orthokeratology lens in adolescents

Figure 3 Comparison of total retinal defocus value in the two groups. Patients with low-degree myopia: Group A: n = 41, mean ± SD = 0.73 ± 0.75; Group B: n = 59, mean ± SD = 1.58 ± 1.31. Patients with moderate -degree myopia: Group A: n = 83, mean ± SD = 0.91 ± 0.89; Group B: n = 54, mean ± SD = 1.66 ± 1.15. Boxes indicate the 1^st, 2^nd, and 3^rd quartile, respectively, whiskers represent the maximum and minimum value, and x indicate mean value. Statistically significant differences between patients treated differently were determined by a Mann-Whitney test (^cP ≤ 0.001). TRDV: Total retinal defocus value; Group A: Myopia patients wearing orthokeratology lenses for 1 year; Group B: Myopia patients wearing frame glasses.