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Orbscan images of study cases. Orbscan image of patient 2 shows central corneal thinning, increased posterior float, and inferocentral corneal steepening (A). Orbscan images of patient 4 at 3 years (B) and 5 years (C) after laser in situ keratomileusis. Both show central corneal thinning, increased posterior float, and central corneal steepening.
