Fig. 1 A corneal model system under UV light crosslinking for the epi-on (A) and epi-off (B) case, where z is along the corneal thickness direction (z=0 for the corneal surface); the red dotted curves define the riboflavin diffusion boundaries.

Fig. 1 A corneal model system under UV light crosslinking for the epi-on (A) and epi-off (B) case, where z is along the corneal thickness direction (z=0 for the corneal surface); the red dotted curves define the riboflavin diffusion boundaries.