Figure 6. The average transmission spectra of ten right (cross-linking, solid line) and left (control, dashed line) eyes from ten rabbits. The transmittance of the cross-linked corneas was 4.77%–21.28% lower than that of the control corneas. The error bars mean the standard deviation of the transmission percentage between animals in each group. In general, the individual variation among the cross-linked corneas was larger than that among the control corneas.