Comparison of the visual performance and quality of vision with combined symmetrical inferonasal near addition versus inferonasal and superotemporal placement of rotationally asymmetric refractive multifocal intraocular lenses

Abstract

None of the authors has a financial or proprietary interest in any material or method mentioned.

Visual quality and performance comparison between 2 refractive rotationally asymmetric multifocal intraocular lenses

“…Neuroadaptation occurs after multifocal IOL implantation 8 ; therefore, this study sought to compare the 2 IOLs 12 months after implantation to allow for neuroadaptation. A study by McNeely et al 14 found that bilateral implantation of asymmetric multifocal IOLs with a combination of superotemporal placement of the near segment in the dominant eye and inferonasal placement of the near segment in the fellow eye yielded enhanced quality of vision compared with bilateral inferonasal placement. Another study 16 found that the placement of the near segment had no significant effect on visual performance; however, the numbers in this study were too small.…”

Correction of presbyopia: An integrated update for the practical surgeon

“…Patients with larger pupils may experience glare and halos after multifocal IOL implantation. [ 78 79 80 ]…”

“…[ 79 ] Astigmatic correction is mandatory to ensure good multifocal IOL results. As such, patients with irregular astigmatism are not good candidates for a multifocal IOL[ 78 80 ] since its correction is neither easy nor predictable. Further studies are needed to determine the visual effects of multifocal IOLs in patients with a history of previous refractive surgery.…”

Pseudophakic Approaches for Addressing Presbyopia

“…To reach good visual results, the correct positioning of the distance and near segment is indispensable. For example, the cited paper demonstrates that a combination of a superotemporal position of the near segment in one eye and inferonasal in the other eye seems to increase visual quality [67]. A good method of assessing the performance of presbyopia-correcting IOLs is defocus curve testing [68] (Fig.…”