Figure 3
Variation of aberration coefficients C 2 0 and C 4 0 with time. Variation of wavefront aberration coefficient C2 0 (left) and C4 0 (right) with time for a 3 mm pupil as calculated by the direct (filled symbols) and scaling (open symbols) methods. Data from an artificial eye (upper graphs) and two subjects are shown. The dotted lines are least-square regression coefficients. Note, that the scaling of y axis is different for the artificial eye.