FIGURE 1
FROM:
Superior keratoconus with inferior paracentral corneal thinning and inferior peripheral pellucid marginal degeneration
C-C Chiang, J-M Lin and Y-Y Tsai
BACK TO ARTICLEFigure 1.
(a and b) The Orbscan topography in the right eye (a) and left eye (b). Disparity was noted between the anterior and posterior corneal surface elevations: anterior corneal elevation was located superiorly (left upper) and posterior corneal elevation was located inferiorly (right upper). The thinnest point was near the posterior elevation area (right lower). In keratometric map (left lower), there was a well-defined superior steep area, with the rule astigmatism and an asymmetric bow-tie configuration in upper 
cornea, and a relatively flat area surrounded by relatively steep circle in the lower 
cornea.
