Design of refractive/diffractive spherocylindrical phakic intraocular lens

A refractive/diffractive spherocylindrical Phakic Intraocular Lens(PIOL) is designed to improve the white light visual quality of the human eye.On the basis of measured individual corneal data,eyeball depths and wavefront aberrations,an individual eye model is constructed with the optical design software Zemax,then the spherocylindrical PIOL and the refractive/diffractive spherocylindrical PIOL are designed by the established eye model.A comparison with spherocylindrical PIOL shows that the refractive/diffractive spherocylindrical PIOL can optimize overall white light Modulation Transfer Functions(MTF) and the MTFs of non-center wavelengths to improve the visual quality.The experiment also shows that a zone of 4 mm is enough for the binary structure.Finally,the fabrication issues are discussed.Obtained results indicate that the designed refractive/diffractive spherocylindrical PIOL has great potential ities in advanced vision correction.