Fig. 4From: Two-year topographic and densitometric outcomes of accelerated (45 mW/cm2) transepithelial corneal cross-linking for keratoconus: a case-control studyThe mean densitometry values over Φ2–6 mm of preoperation, 24-month postoperation, and the control group (The asterisk refers to that a significant difference was detected between the two groups)Back to article page