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dc.contributor.authorSalzano, Francisco M.-
dc.identifier.citationSALZANO, Francisco M. Visual acuity and color blindness among brazilian Cayapo indians. Human Heredity, v. 22, n. 1, p. 72-79, 1972.en_US
dc.publisherKarger Publishersen_US
dc.rightsopen acessen_US
dc.subject.otherRegião Centro-Oesteen_US
dc.subject.otherMato Grossoen_US
dc.subject.otherRegião Norteen_US
dc.subject.otherMebêngôkre Kayapóen_US
dc.titleVisual acuity and color blindness among brazilian Cayapo indiansen_US
dc.creator.affilliationUniversidade Federal do Rio Grande do Sul. Instituto de Biociências. Departamento de Genética. Porto Alegre, RS, Brasil.en_US
dc.description.abstractenTests 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.en_US
dc.subject.decsÍndios Sul-Americanosen_US
dc.subject.decsSaúde de Populações Indígenasen_US
dc.subject.decsAcuidade Visualen_US
dc.subject.decsPercepção Visualen_US
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