Visual Performance Of Monofocal And Bifocal Intraocular Lenses Using Virtual Implantation: A Prospective Randomized Study
Published 2025 - 43rd Congress of the ESCRS
Reference: PP26.10 | Type: Poster | DOI: 10.82333/z4f6-km09
Authors: Steve Schallhorn* 1 , Sebastian Marx 2
1Ophthalmology,UCSF,San Francisco,United States, 2Vision Science,Ernst Abbe University,Jena,Germany
Purpose
To assess the use of a virtual implantation device (VirtIOL) to measure defocus curve and contract sensitivity (CS) of monofocal and bifocal intraocular lenses (IOLs) prior implantation.
Setting
Prospective, randomized, crossover, subject and investigator masked study.
Methods
Adult participants with healthy eyes were enrolled in this study. A monofocal (CT ASPHINA® 409M IOL, Zeiss) and a low-add bifocal IOL (LENTIS Comfort, Oculentis GmbH) were assessed using VirtIOL device. Both IOLs were tested sequentially by all subjects using a randomized order. Both IOLs were tested sequentially by all subjects, using a randomized order. Freiburg vision and contract test was used to measure defocus curve and CS.
Results
Maximum visual acuity (VA) was achieved between -0.75 D and +0.75 D for both IOLs and no significant difference was observed at 0.0 defocus curve (i.e. distance vision) between IOLs. However, the monofocal IOL has a slightly worse VA between -0.5 D to -4.0 D (i.e. intermediate and near vision) compared to the low-add bifocal IOL. Mean CS values was similar at 3 cycles per degree (cpd) but significantly better for the monofocal IOL at 7, 11 and 15 cpd.
Conclusions
In this study, we showed that the VirtIOL device can be used to compare the visual performance between a monofocal and a bifocal IOL.