Design and Optical Analysis of a Refractive Aspheric Intraocular Lens with Extended Depth of Focus
Kunqi Li,
Xiaoqin Chen,
Yayan Bian,
Yuwei Xing,
Xiaolan Li,
Dongyu Liu,
Yongji Liu
Affiliations
Kunqi Li
Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, 38 Tongyan Road, Tianjin 300350, China
Xiaoqin Chen
Tianjin Eye Hospital and Nankai University Eye Institute, Tianjin 300020, China
Yayan Bian
Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, 38 Tongyan Road, Tianjin 300350, China
Yuwei Xing
Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, 38 Tongyan Road, Tianjin 300350, China
Xiaolan Li
Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, 38 Tongyan Road, Tianjin 300350, China
Dongyu Liu
Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, 38 Tongyan Road, Tianjin 300350, China
Yongji Liu
Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, 38 Tongyan Road, Tianjin 300350, China
To obtain a continuous range of clear vision for pseudophakic eyes, a design of intraocular lens (IOL) with extended depth of focus (EDoF) was proposed. The IOL was optimized with a multi-configuration approach based on a pseudophakic eye model and the optical performances of the designed IOL were analyzed. The modulation transfer function (MTF) values remain above 0.2 at 50 lp/mm for object distance ranging from 0.35 m to infinity in both photopic vision and mesopic vision over a field of 4°. The optical performances remain stable when the pupil diameter changes from 2.25 mm to 5 mm. Besides, the presented theoretical analyses show the designed IOL has good optical performances for polychromatic light and corneal asphericity. The above shows that the IOL exhibits an excellent ability for pseudophakic eyes to see the object in a continuous range of distance.
