Cornea (Wills Eye Institute Atlas Series)

Keratoconus 109

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FIGURE 4-1. ( continued ) K. Central corneal scarring and a prominent Fleischer ring are seen in the left eye with keratoconus. L. The same eye with keratoconus seen in K demonstrating severe corneal stromal thinning. M. Anterior segment optical coherence tomography of the cornea with keratoconus seen in K and L clearly illustrating the severe central corneal stromal thinning. There is substantial overlying epithelial thickening, termed compensa tory epithelial hyperplasia .