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. Author manuscript; available in PMC: 2014 Aug 25.
Published in final edited form as: Cornea. 2011 May;30(5):508–515. doi: 10.1097/ICO.0b013e3181fb4fa7

Figure 3.

Figure 3

A: Influence of the apical radius of the corneal surface modeled as a revolution conic on the distance between the BFS to the apex. There is a non linear increase of the distance to the apex (anterior elevation) of the BFS radius with the decrease of the apical radius (apical steepening) of the surface.

B: Influence of the asphericty of the corneal surface modeled as a revolution conic on the distance between the BFS to the apex. There is a non linear increase of the distance to the apex (anterior elevation) of the BFS radius with the increase of negative asphericity (increased prolateness) of the surface.