Single dispersive gradient-index profile for the aging human lens |
| |
Authors: | Díaz José Antonio Pizarro Carles Arasa Josep |
| |
Affiliation: | Departamento de Optica, Edificio Mecenas, Universidad de Granada, 18071-Granada, Spain. jadiaz@ugr.es |
| |
Abstract: | We provide a single gradient-index (GRIN) profile for the crystalline lens in an updated age-dependent emmetropic-eye model. The parameters defining the GRIN profile include their variation with age and the dispersion of the refractive index in order to account for the increase in the positive-wave spherical aberration, for the constant chromatic difference in the refraction of the human eye, as well as for the decrease in the retinal-image quality with aging. In accounting for these ocular properties, the results show that first, the value of the dispersion parameters are invariant with age. Second, those parameters defining the distribution of the lens index cause the lens-center-index value to decrease slightly, and its position along the lens axis changes with age. Furthermore, these findings are in agreement with the lens paradox. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|