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shows the relationship between spherical refractive error (Rx in dioptres) and C40 (microns). Pupil diameter is 7mm, and C40 ranged from −0.7µm to 0.7µm. Rx for PSF SM and VSOTF are shown in Figure 3A, and for high (15 cpd) and low (2 cpd) SFs in Figure 3B.
