Fig. 4

Representative confocal microscopy images at different scanning depths. (a) Confocal image at a depth of 10 μm. No significant abnormalities in the corneal epithelium were visible. (b) Confocal image at a depth of 80 μm. (c) Confocal image at a depth of 120 μm. (d) Confocal image at a depth of 330 μm. Granular, hyperreflective appearance of the corneal stroma (arrows) with multiple, differently oriented dark striae (*). The striae were especially prominent, multilayered, dark and thick at depths from 90–150 μm (b, c), becoming less evident at increasing depths (d)