ESCRS - PP01.04 - Enhance Monofocal Versus Extended Range Of Vision Intraocular Lens: Power Profile And Optical Performance

Enhance Monofocal Versus Extended Range Of Vision Intraocular Lens: Power Profile And Optical Performance

Published 2022 - 40th Congress of the ESCRS

Reference: PP01.04 | Type: ESCRS 2022 - Posters | DOI: 10.82333/9pht-ea35

Authors: Fidel Vega* 1 , Nuria Garzon 2 , Ingrid Arcalís 1 , David Madrid-Costa 3 , María S. Millán 1

1Group of Applied Optics and Image Processing, Optics & Optometry Faculty,Universitat Politècnica de Catalunya, Barcelona Tech,Terrassa,Spain, 2Clinical & Experimental Eye Research Group (CEER) Optics and Optometry Faculty,Universidad Complutense de Madrid,Madrid,Spain, 3Optometry and Vision Department, Faculty of Optics and Optometry,Universidad Complutense de Madrid,Madrid,Spain

Purpose

To assess the differences of surface power profile and optical performance between two intraocular lens (IOL) designs aimed at providing patients with a better intermediate vision: enhanced monofocal (EM-IOL) Tecnis Eyhance (Johnson & Johnson) versus extended range of vision (ERV-IOL) LuxSmart (Bausch+Lomb)

Setting

Group of Applied Optics and Image Processing, Optics & Optometry Faculty, Universitat Politècnica de Catalunya, Barcelona Tech, Spain.

Optometry and Vision Department, Faculty of Optics and Optometry, Universidad Complutense de Madrid, Spain

Methods

The surface power profile and through-focus modulation transfer function (TF-MTF) and area under the MTF (TF-MTFa) were measured in-vitro and compared in two IOL designs: EM-IOL and ERV-IOL. The surface power profile was obtained with the NIMO device (Lambda-X SA, Belgium). The TF-MTF was determined with the IOL placed in a model eye, between -4.0 and +1.0 diopters (D).The assessment was carried out as a function of the IOL base power (10D, 20D and 30D) and pupil diameter (2.0, 3.0 and 4.5 mm)

Results

For the EM-IOL and ERV-IOL designs, the power profile measurements reveal an increase of the refractive power from the periphery to the center of the lens, thus providing effective extra positive correction (i.e., myopic shift) suitable for enhancing intermediate vision for small pupils. Hence, the TF-MTF and TF-MTFa maxima (i.e., the best optical quality) show myopic shifts of ≈0.5D (EM-IOL) and ≈1.0D (ERV-IOL) for a 2.0mm pupil. In contrast to the EM-IOL, the shape of the TF-MTF and TF-MTFa curves of the ERV-IOL (and thus its optical performance) varies noticeably as a function of pupil size. No significant dependency of the IOL base power on the results was found

Conclusions

Objective assessment of surface power profile and optical performance of EM-IOL Tecnis Eyhance and ERV-IOL LuxSmart, showed an increase of the refractive power of the IOLs from the periphery to the center of the lens and a related myopic shift of the best optical quality for small pupils. These findings may benefit intermediate vision. The optical performance of the ERV-IOL evidenced more dependence on pupil size than the EM-IOL. For none of the two IOL designs, the lens base power played a significant role in the results