Person:
Bonnin Arias, Cristina Natalia

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First Name
Cristina Natalia
Last Name
Bonnin Arias
URI
https://hdl.handle.net/20.500.14352/79903
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Óptica y Optometría
Department
Optometría y Visión
Area
Optica
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2015 - 201912020 - 20211
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Author: Chamorro Gutiérrez, Eva × Author: Sánchez Ramos, Celia × Author: Álvarez Peregrina, Cristina × End date: 2021 ×

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Now showing 1 - 2 of 2
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    Development of a Method to Potentially Substitute Direct Evaluation of Mesopic Visual Acuity in Drivers
    (International Journal of Environmental Research and Public Health, 2021) García Rojo, Marta María; Bonnin Arias, Cristina Natalia; Chamorro Gutiérrez, Eva; Álvarez Peregrina, Cristina; Sánchez Ramos, Celia
    (1) Background: In mesopic lighting conditions, or under adverse environmental circumstances, visual information is reduced, which increases the risk of traffic accidents. This effect could be reduced with a precise evaluation of the visual function under mesopic conditions, but it is difficult to replicate in clinics. This study aims to develop an easy-to-adopt method to evaluate mesopic visual acuity (VA) in drivers. (2) Methods: Prospective and observational study in drivers. logMAR mesopic VA was compared with photopic VA measured under different combinations of contrast charts and filters to find the combination that responds best to mesopic conditions. (3) Results: Fifty-six drivers were examined. The best correlation was found with an 80% density filter and a Weber contrast chart of 20%. The logMAR VA for this combination was 0.01 ± 0.11, which was close to the mesopic VA values (0.01 ± 0.12). The difference between both logMAR VA was 0.00 ± 0.06 (R = 0.86; p ≤ 0.001; ICC = 0.86). (4) Conclusions: The use of 20% contrast optotypes and the interposition of an 80% filter under photopic conditions provide VA values similar to those measured under mesopic lighting conditions, making this simple system a good predictor of mesopic VA values.
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    Estudio de biocompatibilidad de las lentes de contacto terapéuticas y profilácticas de absorbancia selectiva de longitudes de onda corta con una solución de peróxido de hidrógeno.
    (Gaceta de optometría y óptica oftálmica, 2015) Bonnin Arias, Cristina Natalia; Sánchez Ramos, Celia; Álvarez Peregrina, Cristina; Chamorro Gutiérrez, Eva; Villa Collar, César
    El objetivo de este trabajo fue analizar la biocompatibilidad de la solución de peróxido de hidrógeno Ever Clean® (Avizor S.A.) con las lentes de contacto terapéuticas y profilácticas de absorbancia selectiva de longitudes de onda corta. Para ello se realizaron estudios de citotoxicidad empleando fibroblastos humanos y siguiendo las recomendaciones de la norma ISO 10993- 5:2009. Se tomaron medidas del daño mitocondrial que se produce en las células, de la apoptosis celular, del estrés oxidativo y del daño en el ADN. Los resultados obtenidos reflejan que la solución Ever Clean® (Avizor S.A.) es biocompatible con las lentes de contacto terapéuticas y profilácticas de absorbancia selectiva de longitudes de onda corta, no produciendo reacciones de citotoxicidad en los fibroblastos conjuntivales humanos.