Visual acuity and color blindness among brazilian Cayapo indians

Please use this identifier to cite or link to this item: http://ds.saudeindigena.icict.fiocruz.br/handle/bvs/7049

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 Pará Mebêngôkre Kayapó Caiapó
DeCS:	Brasil Índios Sul-Americanos Saúde de Populações Indígenas Acuidade Visual Oftalmologia 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

Files in This Item:

File	Description	Size	Format
salzano, francisco.pdf		1.56 MB	Adobe PDF	View/Open

DSpace JSPUI