Uncorrected astigmatism degrades quality of vision in the phakic and pseudophakic eye.
The degradation of vision quality created by residual astigmatism is especially high in an eye implanted with a diffractive or refractive multifocal or extended depth of focus IOL. As little as 0.25 D of astigmatism when evaluated on an optical bench can cause a meaningful degradation in image quality. Today, according to surveys by the American Society of Cataract and Refractive Surgery and the European Society of Cataract and Refractive Surgeons, surgeon members believe a postoperative target of 0.5 D of