Visual Acuity Outcomes Following Refractive Lens Exchange With Implantation Of Diffractive Trifocal Intraocular Lenses Featuring Unique Light Distribution Characteristics
Published 2025 - 43rd Congress of the ESCRS
Reference: FP09.10 | Type: Free paper | DOI: 10.82333/0rmk-8586
Authors: Yanfeng Zeng* 1
1Cataract,Lixiang Eye Hospital of Soochow University,Suzhou,China
Purpose
To evaluate the efficacy and safety of the Vivinex Gemetric and Vivinex Gemetric Plus IOLs (Hoya Surgical Optics) using the pairing approach (first eye treated with Gemetric and second eye with Gemetric Plus) in refractive lens exchange patients. The trifocal IOLs, distinguished by their different light distribution characteristics, are based on the hydrophobic Vivinex platform and are preloaded in the multiSert injector.
Setting
This prospective, interventional clinical study is conducted at the International Vision Correction Research Centre (IVCRC), Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany
Methods
In this study, 56 eyes of 28 patients will undergo bilateral refractive lens exchange with the implantation of Vivinex Gemetric/Gemetric Plus IOLs using the pairing approach. The postoperative follow-ups at 3 and 6 months include assessments of uncorrected (UDVA) and corrected (CDVA) distance visual acuity, uncorrected (UIVA) and distance corrected (DCIVA) visual acuity at 66 cm, as well as uncorrected (UNVA) and distance corrected (DCNVA) near visual acuity at 40 and 33 cm. Additionally, defocus curve testing with distance correction and contrast sensitivity testing under photopic and mesopic conditions are conducted as part of the 3-month follow-up visit.
Results
To date, 30 eyes of 15 patients were implanted with the Vivinex Gemetric and Vivinex Gemetric Plus IOLs. At 3 months, the mean binocular UDVA and CDVA were -0.04 logMAR and -0.09 logMAR, UIVA and DCIVA were 0.05 logMAR and 0.05 logMAR, UNVA and DCNVA at 40 cm were 0.03 logMAR and 0.04 logMAR, and at 33 cm they were 0.01 logMAR and -0.01 logMAR, respectively (n=12 patients). At 6 months, UDVA and CDVA were -0.01 logMAR and -0.09 logMAR, UIVA and DCIVA were 0.03 logMAR and -0.01 logMAR, UNVA and DCNVA at 40 cm were -0.02 logMAR and -0.05 logMAR, and at 33 cm they were -0.01 logMAR and -0.03 logMAR, respectively (n=8). The binocular distance-corrected defocus curve showed visual acuity of 0.20 logMAR or better between +0.5 D and -3.5 D.
Conclusions
The paired implantation of the two different trifocal IOLs resulted in a good binocular visual acuity at all tested distances and a wide range of defocus.