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. 2024 Oct-Dec;17(4):100527.
doi: 10.1016/j.optom.2024.100527. Epub 2024 Nov 16.

Visual performance of a new trifocal intraocular lens design evaluated with a clinical adaptative optics visual simulator

Anabel Martínez-Espert  1 , Diego Montagud-Martínez  2 , Vicente Ferrando  3 , Salvador García-Delpech  4 , Juan A Monsoriu  3 , Walter D Furlan  5
Affiliations

Visual performance of a new trifocal intraocular lens design evaluated with a clinical adaptative optics visual simulator

Anabel Martínez-Espert et al. J Optom. 2024 Oct-Dec.

Abstract

Objective: The digital transformation of daily routines has increased visual demands, especially at intermediate and near distances. The Devil multifocal intraocular lens (MIOL) design was developed to enhance intermediate visual performance. This design is a novel trifocal intraocular lens inspired by the fractal structure known as the 'Devil's staircase'. The aim of this research is to evaluate the visual performance of the Devil MIOL design in real patients.

Methods: The visual acuity defocus curve was obtained from 25 eyes of healthy volunteers using the Visual Adaptive Optics Simulator (VAO, Voptica SL, Murcia, Spain). Additionally, images of optotypes simulating those seen through the Devil MIOL design were captured to qualitatively illustrate optotype perception at different vergence values.

Results: Mean visual acuity values of the evaluation were 0.03 logMAR at 0.00 D vergence, 0.10 logMAR at +1.50 D vergence, and 0.11 logMAR at +3.00 D vergence, corresponding to far (optical infinity), intermediate (66.7 cm), and near foci (33.3 cm), respectively. The experimental outcomes were indeed slightly better than numerical results obtained previously in a model eye.

Conclusions: The Devil MIOL design provides satisfactory visual acuity across three primary foci and produces extended depth of focus between the intermediate and near foci.

Keywords: Adaptive optics simulator; Fractal lens; Multifocal intraocular lens.

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Conflict of interest statement

Conflicts of Interest The authors declare no conflicts of interest.

Figures

Fig 1:
Fig. 1
a) Phase profile of the devil multifocal intraocular design generated by the liquid crystal on silicon spatial light modulator of the Visual Adaptive Optics Simulator (VAO) for a pupil diameter of 4.5 mm and b) optotype used for capturing qualitative images with the artificial eye.
Fig 2:
Fig. 2
Mean ± standard deviation (SD) of monocular visual acuity (VA) defocus curve illustrating the clinical results with the Devil MIOL (red line) and the numerical results of calculated VA with Devil MIOL in a Liou-Brennan model eye for 3.0 mm (black dotted line) and 4.5 mm pupil diameter (black line).
Fig 3:
Fig. 3
Images of a Snellen E optotype corresponding to 0.4 logMAR, 0.2 logMAR, and 0.0 logMAR visual acuity obtained with the VAO system.
See this image and copyright information in PMC

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