Fig. 3From: The Zhu-Lu formula: a machine learning-based intraocular lens power calculation formula for highly myopic eyesCumulative distribution function curves of absolute errors of each formula in highly myopic eyes in the internal (a) and external (b) test datasets. BUII, Barrett Universal II; EVO, Emmetropia Verifying Optical; RBF, Radial Basis Function; D, diopterBack to article page