PMC7498931_01
Slit lamp photograph of the right (A) and left (B) eyes. When a slit beam of light was shown to the limbus from one side, the shape of light reflex seen in the opposite side indicated steepening of the inferior cornea (white arrows in each figure) just above the thinning.
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The cornea just above the thinning was steep and bulging, which could be elicited when light was shone to the limbus from the opposite side (Figure 1).
Corneal topography map of the right (A) and left (B) eyes showing a crab claw pattern in axial curvature.
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A crab claw pattern with central flattening of the vertical meridian was seen in the Atlas (Figure 2).
Continued.
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In the right eye, the pentacam showed that the steepest part of the cornea was just below the thinnest part of the cornea (Figure 3A-F).
Continued.
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In the Belin Ambrosio Display (BAD) map relatively lower BAD D values were observed, especially in the left eye (Figure 4).
Pentacam reports show thinning inferiorly, with steep keratometry below the region of thinning in the right eye (A-C) and the left eye (D-F).
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The thinnest part of the cornea was not coinciding with the thinnest part of the epithelium in the optovue, especially in the right eye (Figure 5).