| 摘要 |
Methods and devices for inhibiting the dark shadow effect, known as dysphotopsia, perceived by some subjects having implanted intraocular lenses (IOLs) are presented. In one aspect, an IOL can include an optic and one or more fixation members for facilitating placement of the IOL. The fixation member can be adapted to have a portion that redirects light that is incident thereon in a manner which alleviates or prevents dysphotopsia. For example, the light that is incident on a fixation member can be directed to a retinal location intermediate to where imaging typically occurs on the retina and where a secondary image is formed. Various techniques for achieving these improvements are discussed, both in terms of the structures of improved IOLs, and methods for alleviating dysphotopsia.
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