The Light Sword Lens - A novel method of presbyopia compensation: Pilot clinical study

Krzysztof Petelczyc, Anna Byszewska, Ewelina Chojnacka, Zbigniew Jaroszewicz, Karol Kakarenko, Alejandro Mira-Agudelo, Aleksandra Ostrowska-Spaleniak, Aleksandra Składowska, Andrzej Kołodziejczyk and Marek Rękas

PLOS ONE, 2019, vol. 14, issue 2, 1-13

Abstract: Purpose: Clinical assessment of a new optical element for presbyopia correction–the Light Sword Lens. Methods: Healthy dominant eyes of 34 presbyopes were examined for visual performance in 3 trials: reference (with lens for distance correction); stenopeic (distance correction with a pinhole ϕ = 1.25 mm) and Light Sword Lens (distance correction with a Light Sword Lens). In each trial, visual acuity was assessed in 7 tasks for defocus from 0.2D to 3.0D while contrast sensitivity in 2 tasks for defocus 0.3D and 2.5D. The Early Treatment Diabetic Retinopathy Study protocol and Pelli-Robson method were applied. Within visual acuity and contrast sensitivity results degree of homogeneity through defocus was determined. Reference and stenopeic trials were compared to Light Sword Lens results. Friedman analysis of variance, Nemenyi post-hoc, Wilcoxon tests were used, p-value

Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0211823

DOI: 10.1371/journal.pone.0211823

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