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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: J Cataract Refract Surg. 2010 Dec;36(12):2115–2122. doi: 10.1016/j.jcrs.2010.07.018

Figure 2.

Figure 2

The anterior and posterior corneal powers are calculated by fitting the central 3.0 mm diameter area (D = central corneal thickness; Ra = anterior radius of curvature; Rp = posterior radius of curvature).