Enhancement of contrast sensitivity and losses of chromatic discrimination with tinted lenses
Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10045/18428
Título: | Enhancement of contrast sensitivity and losses of chromatic discrimination with tinted lenses |
---|---|
Autor/es: | Fez Saiz, Dolores de | Luque Cobija, María José | Viqueira, Valentín |
Grupo/s de investigación o GITE: | Grupo de Óptica y Percepción Visual (GOPV) | Visión y Color |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía |
Palabras clave: | Color vision | Colored filters | Contrast sensitivity | Chromatic discrimination |
Área/s de conocimiento: | Óptica |
Fecha de creación: | 2002 |
Fecha de publicación: | sep-2002 |
Editor: | Lippincott, Williams & Wilkins |
Cita bibliográfica: | FEZ, Dolores de; LUQUE, Mª José; VIQUEIRA, Valentín. "Enhancement of contrast sensitivity and losses of chromatic discrimination with tinted lenses". Optometry & Vision Science. Vol. 79, No. 9 (Sept. 2002). ISSN 1040-5488, pp. 590-597 |
Resumen: | Purpose. Tinted lenses for everyday use should not impair visual acuity and contrast sensitivity or cause radical changes in color perception. The main aim of this study was to compare the performance in contrast detection and color discrimination tasks of a set of tinted lenses with that of gray filters of equal luminance under D65. Methods. The contrast sensitivity functions of 10 observers were measured using sinusoidal gratings of mean luminance of 13 cd/m2 by the adjustment method. Color discrimination thresholds from white (x = 0.313, y = 0.330), green (x = 0.346, y = 0.407), and blue (x = 0.280, y = 0.253) were measured along 12 directions in the CIE-1931 xy diagram with and without lenses. Results. Green, brown, and blue filters did not cause significant changes in contrast sensitivity compared with a gray filter of equal luminance, although chromatic discrimination was disturbed. Yellow and orange filters improved achromatic contrast at certain spatial frequencies, but impaired chromatic discrimination. Conclusions. Compared with gray filters of the same luminance, yellow filters may be useful when enhancement of low achromatic contrasts is desirable, although overall brightness decrements may occur. Nevertheless, these lenses cause tritan-like defects with discrimination losses increasing with the cutoff wavelength. |
URI: | http://hdl.handle.net/10045/18428 |
ISSN: | 1040-5488 (Print) | 1538-9235 (Online) |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2002 American Academy of Optometry |
Revisión científica: | si |
Aparece en las colecciones: | INV - GOPV - Artículos de Revistas INV - GVC - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
paper.pdf | Versión revisada (acceso libre) | 818,25 kB | Adobe PDF | Abrir Vista previa |
Enhancement_of_Contrast_Sensitivity_and_Losses_of.10.pdf | Versión final (acceso restringido) | 1,35 MB | Adobe PDF | Abrir Solicitar una copia |
Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.