Long-Term Follow-Up of Intrastromal Corneal Ring Segments in Paracentral Keratoconus with Coincident Corneal Keratometric, Comatic, and Refractive Axes: Stability of the Procedure

Figure 3

Variation in CDVA five years after ICRS implantation (safety) for the whole sample and for group I (younger patients) and group II (older patients).