Age-Related Long-Term Functional Results after Riboflavin UV A Corneal Cross-Linking

Figure 5

Graph showing topographic analysis of corneal symmetry using the superior-inferior index (SI). After cross-linking SI improved in paediatric patients by a mean of +0.3 D, +0.6 D, +0.2 D and +1.5 D; in the intermediate group changed by a mean of: −0.42 D, −0.55 D, +0.90 D, +0.40 D; in adult patients varied by a mean of: −0.26 D, −0.21 D, +1.17 D, −0.21 D at 12, 24, 36 and 48 months of follow-up respectively.