Cornea (Wills Eye Institute Atlas Series)

116 4 Ectatic Conditions of the Cornea

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FIGURE 4-2. ( continued ) C. Slit-beam photo revealing inferior corneal thinning approximately 2 mm from the limbus, below the area of maximal protrusion. D. Slit-beam view of this eye with severe pellucid marginal degen eration also revealing corneal thinning approximately 2 mm from the inferior limbus. There is significant corneal steepening inferiorly. Note that the most protruded portion of the cornea is above the thinnest area.

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