PMC7648247_01
Distributions of the binocular axial lengths of 505 aniso-axial length patients. Every dot in the figure represents one person with a binocular axial difference >=1 mm. The horizontal axis indicates the axial length of the relative longer eye in each patient, and the vertical axis indicates the axial length of the relative shorter eye.
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The distribution of the AL of the remaining 505 aniso-axial length patients is shown in Figure 1; among these patients, 16 were excluded because of their young age (<20 years old).
Comparison of astigmatism among the aniso-axial length groups and the non-aniso-axial length groups in the shorter set or the longer set. Non-aniso = non-aniso-axial length group, Aniso =  aniso-axial length group. P values were reported by post hoc LSD correction.
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Table 2 and Figure 2). The division of the total corneal astigmatism into WTR, ATR, or oblique astigmatism was similar (P=0.569; Table 3).
Distribution of posterior corneal aberrations among the eight subgroups in the longer set. TAs = total aberrations; HOAs = high-order aberrations; LOA = low-order aberrations. For the aniso-axial length subgroups, a value of 1 mm is included in the 1-2 mm subgroup and similarly for other values that fall at the boundary between two subgroups. The P values for TAs, HOAs, LOAs, and oblique trefoil with analyses of variance among the eight aniso-axial length subgroups in the longer set were 0.025, 0.005, 0.039, and 0.040, respectively. The P values for TAs, HOAs, LOAs, and oblique trefoil using independent Student's t test between aniso-axial length eyes in the longer set with and without AL >=5 mm were <0.001, 0.036, 0.001, and 0.275, respectively.
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TAs (P=0.025), posterior corneal HOAs (P=0.005), posterior corneal LOAs (P=0.039), and posterior corneal oblique trefoil (P=0.040) among subgroups in the longer set, whereas there were no significant difference among subgroups in the shorter set. The distributions of the variables in the eight subgroups of the longer set are shown in Figure 3.