Two-year topographic and densitometric outcomes of accelerated (45 mW/cm2) transepithelial corneal cross-linking for keratoconus: a case-control study.

K1, K2, Km, CA, Kmax, CCT, TCT, ACE, and PCE values may remain stable but severer KC patients tend to have poorer long-term outcomes. The densitometry values of the full corneal thickness (total layer over Φ0-2 mm and Φ2-6 mm) may decrease to normal levels at 2 years after ATE-CXL for KC.