Fig. (4) Temporal Changes in Keratometry (Kmax) Following Non-topographic Transepithelial Photorefractive Keratectomy with Crosslinking for Keratoconus. The adjoined table provides the statistical assessment of changes compared to preoperative (first row) and over the post operative period (second row), showing a statistically significant reduction postoperatively, but stability over the postoperative follow up period.