Impairment of color spatial vision in chronic alcoholism measured by psychophysical methods
Psychol. neurosci. (Impr.)
;
2(2): 179-187, Dec. 2009. graf, tab
Artigo
em Inglês
| LILACS
| ID: lil-574095
ABSTRACT
We used psychophysical tests to evaluate spatial vision in 15 subjects with a clinical history of chronic alcoholism by measuring luminance contrast sensitivity and color discrimination. The subjects were initially subjected to clinical inquiry and ophthalmological exam. Subjects then performed psychophysical tests to measure spatial contrast thresholds using sine wave gratings of different spatial frequencies and contrasts and chromatic discrimination thresholds using the Mollon-Reffin test. For the analysis, subjects were divided into three groups according to age and compared with age-matched controls. Ten subjects had some degree of color vision loss, which was quite severe in seven cases. All subjects had normal luminance contrast sensitivity. The results suggest that color vision changes related to chronic alcoholism can occur in the absence of impairment of spatial luminance contrast sensitivity and thus is an important aspect to be considered in the clinical evaluation of this condition.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Percepção Espacial
/
Sensibilidades de Contraste
/
Alcoolismo
/
Visão de Cores
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Psychol. neurosci. (Impr.)
Assunto da revista:
Neurologia
/
Psicologia
Ano de publicação:
2009
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal do Amapá/BR
/
Universidade Federal do Pará/BR
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