Chinese Optics Letters, 2006, 4 (5): 05299, Published Online: Jun. 6, 2006
An investigation on dysphotopsia of a sigma-edged intraocular lens Download: 654次
190.5890 Scattering, stimulated 220.2740 Geometrical optics, optical design 170.4460 Ophthalmic optics
Abstract
A sigma-edged design of intraocular lens (IOL) is proposed to minimize the reflected glare images associated with the edge. The optimal sigma inverse edge is investigated when pupil diameter is 5.0 mm by the established Escudero-Sanz's wide angle model. The non-sequential ray tracing program of Zemax-EE (Zemax Development Corp., San Diego, USA) is used to investigate the sigma edge of reducing the potential for edge glare phenomena. The results show that sigma-edged design can significantly reduce the reflected glare intensity on retina if the angle of its inverse edge is taken from 20 to 70 degrees.
Zhishan Gao, Meimei Kong, Xinhua Li, Lei Chen, Rihong Zhu. An investigation on dysphotopsia of a sigma-edged intraocular lens[J]. Chinese Optics Letters, 2006, 4(5): 05299.