Photochromic contact lenses: Optical analysis and visual effects of their transition dynamics

Sartoretto, E. and Kryeziu, F. and Rossetti, A. and Gheller, P. and Ruffato, G. (2023) Photochromic contact lenses: Optical analysis and visual effects of their transition dynamics. Il nuovo cimento C, 46 (5). pp. 1-4. ISSN 1826-9885

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Since their introduction, the evolution of contact lenses has been mainly routed by criteria of wearing comfort, increased oxygen permeability, and correction of refractive errors, while less attention has been paid to the improve- ment of visual functions. More recently, a new type of contact lenses has been designed and marketed. This type of lenses contain photochromic additives that enable filtering in the visible range depending on the intensity and spectrum of en- vironmental light. In this work, we have characterized the dynamics over time of commercial photochromic contact lenses in order to quantify their filtering effect in the visible as a function of the input wavelength and estimate the transition time necessary for their activation and deactivation. In addition, we have investigated the influence of photochromic contact lenses on visual functions during specific indoor and outdoor activities. The present research encompasses an optical characteriza- tion of the constituent photosensitive material and a preliminary investigation of the expected visual benefits provided by the use of this new type of optical devices.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 15 Mar 2024 15:46
Last Modified: 15 Mar 2024 15:46

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