Effect of Large Apertures on the Optical Quality of Three Multifocal Lenses

Abstract

The TECNIS Symfony IOL is less vergence dependent than the AT LISA and Finevision IOLs under dim conditions. These results may help clinicians to choose the proper lens depending on the patient's visual requirements.

Extended depth of focus intraocular lens Chromatic performance

“…This leads us to discuss on bifocal design, Symfony's lens EDOF design, and on the compensation of chromatic aberration. Such results and discussions provide an additional context to the modulation transfer function based results recently reported by related research [18][19][20][21].…”

A More Natural Way of Seeing: Visual Performance of Three Presbyopia Correcting Intraocular Lenses

“…Law et al [14] used the Pelli Robson test to measure CS in patients with the ATLISA IOL and found no differences between mesopic and photopic results. Also, the light distribution of the Symfony IOL between its best vision foci has been demonstrated to be more homogeneous and less vergence dependent under dim conditions compared to multifocal IOLs [28].…”

Through-Focus Optical Bench Performance of Extended Depth-of-Focus and Bifocal Intraocular Lenses Compared to a Monofocal Lens

“…14 Some studies have demonstrated that positive dysphotopsia with diffractive presbyopia-correcting IOLs could be attributed to the ring pattern optic design for the multifocality along the optical axis, the airy pattern from pupil diffraction, and the saturation from the light source. 4,15,16 Although Luttrull et al 17 described a concentric ring-related dysphotopsia in patients implanted with diffractive multifocal IOLs, there has been minimal research about positive dysphotopsia with multifocal IOLs. Gatinel and Loicq 18 stated that the halos generated by multifocal IOLs are the result of the combination of dispersing rays and pupil diffraction.…”

“…Our results are consistent with those found in earlier optical bench studies. Specifically, Esteve-Taboada et al 4 reported that the EDOF IOL was less vergence dependent than existing trifocal IOLs under dim conditions. Likewise, the EDOF IOL has shown disadvantages at near distance as reported in previous studies.…”

“…Specifically, it has a biconvex wavefront-designed anterior aspheric surface and a posterior achromatic diffractive surface. 3,4 The low and high add bifocal IOLs have addition powers of +2.75 and +4.00 diopters (D), respectively. Both are diffractive bifocal IOLs with an anterior aspheric surface and a posterior diffractive surface.…”