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Title: Visual acuity and color blindness among brazilian Cayapo indians
Authors: Salzano, Francisco M.
Affilliation: Universidade Federal do Rio Grande do Sul. Instituto de Biociências. Departamento de Genética. Porto Alegre, RS, Brasil.
Abstract: Tests with Ishihara’s plates [6] showed that only 1 of 120 males belonging to two populations of Brazilian Cayapo Indians was color-blind (deuterodefective). This characteristic was not obser ved among 149 women. Visual acuity was tested in 149 persons; they generally presented excellent vision, more than half showing an acuity better than 20/20. These results are in accordance with the hypothesis that selection may have been important in preserving individuals with exceptionally good visual acuity and a low frequency of color-blinds among hunters and gatherers.
Keywords: Região Centro-Oeste
Mato Grosso
Região Norte
Mebêngôkre Kayapó
Doenças e Agravos Não Transmissíveis
DeCS: Brasil
Índios Sul-Americanos
Saúde de Populações Indígenas
Acuidade Visual
Percepção Visual
Issue Date: 1972
Publisher: Karger Publishers
Citation: SALZANO, Francisco M. Visual acuity and color blindness among brazilian Cayapo indians. Human Heredity, v. 22, n. 1, p. 72-79, 1972.
metadata.dc.identifier.doi: 10.1159/000152471
ISSN: 0001-5652
Copyright: open acess
Appears in Collections:DANT - Artigos de Periódicos

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