Fig. 1

Changes in densitometry readings before and 1, 3 and 7 days after cataract surgery. a to d: Corneal densitometry readings in the central 2 mm zone for the anterior layer (120 μm) (a), center layer (b), posterior layer (60 μm) (c), and total depth (d). e to h: Corneal densitometry readings in the 2–6 mm annulus zone for the anterior layer (e), center layer (f), posterior layer (g), and total depth (h). *p < 0.05, **p < 0.01 versus preoperative reading by Friedman’s test