Visual processing of color and shape in people with leprosy : Visual processing in people with leprosy

Psicologia, Reflexão E Crítica : Revista Semestral Do Departamento De Psicologia Da UFRGS
Perla Figueredo Carreiro SoaresNatanael A Santos

Abstract

The aim of this study was to analyze the contrast sensitivity of spatial luminance and the color discrimination thresholds of the protan, deutan, and tritan axes of people with leprosy. This study included 8 subjects with leprosy (M = 4, W = 4, M = 33.38 ± 8.7) and 8 healthy subjects (M = 4, W = 4, M = 30.89 ± 5.8). The contrast sensitivity was evaluated by the Metropsis software version 11.0 with vertical sinusoidal grids of frequencies of 0.2, 0.5, 1, 5, 10, and 16 cycles per degree of visual angle (cpd) and color vision by the desaturated Lanthony D15 tests and the trivector and ellipse protocols of the Cambridge Color Test. The results showed significant differences between the groups in the processing of spatial frequencies of 0.2 (U = 14; p = .018); 5.0 (U = 45.0; p = .001); 10.0 (U = 45.0; p = .001), and 16.0 (U = 45.0; p = .001) cpd. The difference in color recognition through D15d (U = 4.0; p = .002). Ellipse 2 (U = 10.0; p = .012) and ellipse 3 (U = 9.0; p = .009) were discriminated against. Overall, the results indicate that leprosy changes the visual processing of low, medium, and high spatial frequencies, as well as the sensitivity of the short wavelength (tritan line of confusion) and long (protan line of confusio...Continue Reading

References

Apr 1, 1981·The British Journal of Ophthalmology·R Dethlefs
Jan 19, 2000·Trends in Microbiology·A Rambukkana
Mar 18, 2003·Trends in Cognitive Sciences·Donald I.A. MacLeod
Jan 13, 2004·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·H UlviB Müngen
Aug 2, 2005·Arquivos brasileiros de oftalmologia·Francineide Sadala de SouzaEdmundo Frota de Almeida Sobrinho
Nov 23, 2006·Arquivos brasileiros de oftalmologia·João Lins de Andrade NetoLaura Patrícia Ferreira Santos
Nov 15, 2008·Revista brasileira de enfermagem·Carmen Silvia de Campos Almeida VieiraLetícia Faroni Guimarães da Silva
Apr 7, 2009·Arquivos brasileiros de oftalmologia·Roberta VenturaLúcia Carvalho de Ventura Urbano
Aug 12, 2009·Clinical Ophthalmology·André Omgbwa EballéNsom Mba
Mar 23, 2018·Chronobiology International·Michael Jackson Oliveira de AndradeNatanael Antonio Dos Santos
Mar 16, 2018·Revista Panamericana De Salud Pública = Pan American Journal of Public Health·Mara Dayanne Alves RibeiroSabrynna Brito Oliveira

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Software Mentioned

Metropsis
SPSS

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