RT Journal Article
T1 Effect of a yellow filter on mesopic contrast perception and differential light sensitivity in the visual field.
T2 Efecto de un filtro amarillo sobre la percepción mesópica del contraste y la sensibilidad lumínica diferencial en el campo visual.
A1 Pérez Carrasco, María Jesús
A1 Puell Marín, María Cinta
A1 Sánchez Ramos, Celia
A1 Langa Moraga, Antonio
AB Purpose: Previous studies on the effects of yellow filters in the visual performance have been carried out, presenting discrepancies among the different investigations. Our study reports the influence of the yellow filter without residual reflections on contrast perception and differential light sensitivity (DLS) under mesopic conditions.Methods: Contrast sensitivity, low contrast visual acuity and luminance thresholds in the central visual field (30 degrees ) were measured in a group of 38 adult subjects with and without a coated yellow lens (482-nm cut-off) under mesopic conditions.Results: The contrast sensitivity mean was significantly better with the filter at low- and middle-range spatial frequencies (1.5 cycles/degree p = 0.002 and 6 cycles/degree p = 0.02). At 5% contrast, the mesopic low contrast visual acuity improved significantly (p = 0.004) when interposing the yellow filter. The increase in DLS was statistically significant [e.g. all visual fields p = 0.0003 and macular visual field (9.5 degrees ) p = 0.00001] through the yellow filter on the different established areas of the visual field (30 degrees ).Conclusions: The yellow filter without residual reflections had a positive influence on the brightness and contrast perception of healthy subjects, for which its use would be beneficial under mesopic conditions.
PB Karger
SN 0030-3747
YR 2003
FD 2003-01-30
LK https://hdl.handle.net/20.500.14352/105330
UL https://hdl.handle.net/20.500.14352/105330
LA eng
NO María Jesús Pérez, María Cinta Puell, Celia Sánchez, Antonio Langa; Effect of a Yellow Filter on Mesopic Contrast Perception and Differential Light Sensitivity in the Visual Field. Ophthalmic Res 1 February 2003; 35 (1): 54–59. https://doi.org/10.1159/000068202
NO Received: July 8, 2002; Accepted after revision: October 24, 2002.This study was supported by Essilor (España) research grants to each of the authors and was presented in part at the EVER 2001 Meeting in Alicante (Spain).
DS Docta Complutense
RD 2 oct 2024