Optical design of contact lenses using principal component analysis method with Taguchi method

In this study, an optimal contact lens design for myopia and astigmatism eyes was proposed. In addition to the optical parameters of the human eye, the physiologically relevant parameters of design have become the subject of increased focus. If we compacting overall volume size, the value of spherical aberration (SA) at wide radius of contact lens seems lower. If we corrected the design to improve the value of SA, modulation transfer function (MTF) and coma aberration (TCO) value would become lower relatively. Hence we integrated the optimal method of Taguchi method and mathematical analysis scheme of principal component analysis (PCA) to optimize the multiple quality characteristics (SA, TCO and MTF) of the contact lens. By combining Taguchi and PCA methods, a set of optimum design parameters was well selected to balance the values of SA, TCO and MTF that improve the SA 25.63%, TCO 91.88% and MTF 2.4% than commercial optical design software of CODE V.