Novel eye schematic model and its application in radial gradient index intraocular lens design

The aim of these studies was to devise a new eye schematic model which would have a minimal level of spherical aberration. The outgoing point was the eye model described by Kooijman. The objective was achieved by introducing a Gaussian type radial gradient index distribution lens. The investigations showed a simple relationship between the axial length of the model and the values of refractive indices along the axis of the lens and in the equatorial plane. Additionally, knowledge of the dependence of the gradient index distribution coefficient on the values of the axial and equatorial refractive indices permits determination of the individual aberrations for each patient based only on a measurement of axial length or match an eye schematic model to an examinated eye individually. The algorithm of such a match was proposed. The lenticular index distribution presented in this schematic model eye has the potential for creating individual intraocular lens designs.