Through focus image quality of eyes implanted with monofocal and multifocal intraocular lenses

Intraocular lenses (lOLs) are commonly implanted in cataract surgery. Initially lOLs were mainly monofocal, but at present there are many multifocal lOLs available, which are being implanted. Multifocal lOLs have the potential advantage of reducing the dependence on spectacle correction for near vision after cataract surgery. Because the multifocal lOLs superimpose the near and far images on the retina, however, the overall ocular image quality might be reduced in comparison with that of monofocal lenses. Several kinds of studies on the optical performance of different types of lOLs have been performed: optical bench