Person:
Pérez Carrasco, María Jesús

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First Name
María Jesús
Last Name
Pérez Carrasco
URI
https://hdl.handle.net/20.500.14352/79893
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Óptica y Optometría
Department
Optometría y Visión
Area
Optica
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2006 - 200912010 - 20131
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Author: Sánchez Ramos, Celia × Item Type: Publication × Has files: true × Subject: 617.751 ×

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Now showing 1 - 2 of 2
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    New Optical Filter Plate for Use as Eye Protection by Welders
    (Welding journal, 2013) Langa Moraga, Antonio; Bonnin Arias, Cristina Natalia; Chamorro, Eva; Pérez Carrasco, María Jesús; Sánchez Ramos, Celia
    People whose work tasks involve the use of welding torches are at special risk of suffering eye injuries due to the emission of visible, short-wavelength radiation. Current legislation requires that a company provide its employees with protection against the harmful radiation produced by welding equipment. Often, however, a worker will be reluctant to use protective goggles since these markedly cut visibility and can consequently lead to errors or even burns. This practice of avoiding the use of protection makes them susceptible to suffer irreversible severe retinal damage leading to partial or complete loss of vision. In this paper, we propose the use of a new photoprotective filter in the form of safety goggles that seeks to improve the compromised vision produced by conventional filters. We compare a series of visual function variables in 36 adults, aged 30 to 58 years, using the new optical filter and a conventional filter used for welding protection. Our findings suggest that the filter proposed provides optimal protection against the harmful effects of short-wavelength radiation while minimizing the reduced vision effects of conventional filters used for this purpose.
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    Contrast sensitivity and disability glare in patients with dry eye
    (Acta Ophthalmologica Scandinavica, 2006) Puell Marín, María Cinta; Benítez Del Castillo Sánchez, José Manuel; Martínez De La Casa Fernández-Borrella, José María; Sánchez Ramos, Celia; Aladro Vico, Eva; Pérez Carrasco, María Jesús; Pedraza Aranda, Constanza; Hierro Zarzuelo, Almudena, del
    Purpose: To evaluate contrast sensitivity and disability glare in patients with dry eye using the Contrast Glaretester 1000. Methods: Contrast sensitivity and disability glare were determined in 33 eyes of 33 patients with dry eye and 30 eyes of 30 healthy control subjects for six target sizes with a visual angle of 6.3-0.7 degrees using the Contrast Glaretester 1000, whose working mechanism is similar to that of the conventional perimetry instrument. Results: Contrast sensitivity was significantly worse in dry eye group when viewing all target sizes (reduction of 0.10-0.25 log contrast units, p < 0.01) except at 6.3 degrees. In the presence of glare, differences in log contrast sensitivity between the groups (0.10-0.25 units) were significant (p < 0.01) for all target sizes, with the dry eye group showing worse results. The reduction in contrast sensitivity induced by glare (disability glare) was significantly worse in the dry eye group versus the control group but only for the 2.5-degree size target, where 0.14 log contrast units were lost. Conclusions: Contrast sensitivity with and without glare was significantly reduced in patients with dry eye compared with control subjects, but the number of log contrast units lost with glare (disability glare) was similar in the two groups, except for the 2.5-degree size target.