Changes in contrast sensitivity perception due to protector screens for welding tasks : conventional protective optical filter vs novel protective optical filter of selective absorbance

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dc.conference.date10-13 octubre, 2012
dc.conference.placeNiza, Francia.
dc.conference.titleEuropean association for Vision and Eye Research (EVER). 2012 EVER congress.
dc.contributor.authorBonnin Arias, Cristina Natalia
dc.contributor.authorAguirre Vilacoro, V.
dc.contributor.authorChamorro Gutiérrez, E.
dc.contributor.authorLobato Rincón, Luis Lucio
dc.contributor.authorLanga Moraga, Antonio
dc.contributor.authorNavarro Valls, J.J.
dc.contributor.authorSánchez Ramos, Celia
dc.date.accessioned2024-07-19T12:24:30Z
dc.date.available2024-07-19T12:24:30Z
dc.date.issued2012-10-13
dc.descriptionResumen del poster
dc.description.abstractPurpose: To evaluate diff erences in contrast sensitivity perception in central visual field using protective optic fi lters for welding tasks. Two interposed filters are compared: a conventional protective optical fi lter and a new protective optical fi lter with selective absorption designed by University Complutense of Madrid (UCM). Methods: 36 people of working-age were included in a cross-sectional prospective observational study. Contrast sensitivity threshold in central visual fi eld was evaluated using FDT Perimeter, C-20 procedure (Humphrey systems, USA). ! ree conditions were set: a) without optical fi lters; b) with an interposition of conventional protective optical fi lter for welding (shade 2.5) and c) with an interposition of a novel protective optical fi lter of selective absorbance that fully blocks the short wavelength light and minimally attenuates the remaining bands of the visible spectrum. Results: Contrast sensitivity in all visual fi eld areas evaluated diminished 91-98% with the conventional protective optical fi lters. UCM optical fi lters provoked a low-level decrease in contrast sensitivity (9-19%). Mean contrast sensitivity thresholds were 29.5±5dB, 25.5±4dB, 1.8±2dB in conditions a, b and c respectively Conclusion: Conventional optical fi lters resulted in drastically diminished contrast sensitivity. UCM optical fi lter minimally diminish the visual function, allowing a suitable visibility and also maintaining an appropriate level of protection against phototoxic damage.
dc.description.departmentDepto. de Optometría y Visión
dc.description.facultyFac. de Óptica y Optometría
dc.description.refereedTRUE
dc.description.statuspub
dc.identifier.urihttps://hdl.handle.net/20.500.14352/106931
dc.language.isoeng
dc.rights.accessRightsopen access
dc.subject.keywordcontrast sensitivity; visual perception; protector screens: welding tasks; optical filter; selective absorbance.
dc.subject.ucmÓptica y optometría
dc.subject.ucmÓptica oftálmica
dc.subject.unesco2209 Óptica
dc.subject.unesco2209.15 Optometría
dc.subject.unesco3210 Medicina Preventiva
dc.titleChanges in contrast sensitivity perception due to protector screens for welding tasks : conventional protective optical filter vs novel protective optical filter of selective absorbance
dc.title.alternativeCambios en la percepción de la sensibilidad al contraste debidos a las pantallas protectoras para tareas de soldadura : filtro óptico protector convencional frente a novedoso filtro óptico protector de absorbancia selectiva
dc.typeconference poster
dc.type.hasVersionVoR
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