Wednesday , November 25 2020

More health for our eyes: They invent a filter that "exploits" the screen's harmful blue light



The eyes get more and more stimuli from electronic objects. Researchers are working to counteract the effects of both the so-called blue light tablets and mobile phones

The Fernández-Vega Ophthalmology Institute (IOFV), Ophthalmological Research Foundation (FIO), Asturias Technological Institute of Materials (ITMA) and University of Oxford published in the scientific journal & # 39;Optical materials& # 39; a work that analyzes the benefits of a filter like Not only blocks harmful lightas it happens until now, but it also turns into beneficial light for the retina.

The goal? The foundation can be used to design "lenses" neuroprotective and therapeutic for patients with glaucoma and Macular Degeneration Associated with Age (DMAE). The key would be to take advantage of the "red light" that would not be as harmful as blue.

Light blue vs red light

According to Professor Neville N. Osborne and Dr. Susana del Omo, principal researcher of FIO, works unfiltered blue light along with certain pigments present in the retina. be able to damage it. On the contrary, red light stimulates the tissues and has the potential counteract these injuries. Therefore, it was believed that modulation of the amounts of red light could be beneficial for some patients.

The difference with the existing filters so far. Dr. Amador Menéndez, ITMA scientist and lead author of the article explained: "The use of filters is not new in ophthalmology, but to date filters were used exclusively absorptive (which blocks light and loses it in the form of heat) or photonic crystals (reflecting the light of certain wavelengths) ".

"With this new type of filter – known as luminescent filters – a spectral distribution of light with a potential double effect is obtained: neuroprotective (by blocking the harmful UV blue light) and therapeutic (by providing extra amount of red-IR light that stimulates retinal cell regeneration), "says the nanophotonics expert.

New glasses

This filter could be incorporated into the lenses, without significantly changing the quality of vision. The ophthalmologist and researcher Andrés Fernández-Vega Cueto-Felgueroso pointed out that this research was born with the idea of ​​offering added value to current treatments.

The studies were carried out within the framework of the project "Retineta: Development of luminescent nanomaterials for neuroprotection and pathology nanotherapy in an experimental model of retinal damage by light ".


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