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Anomaloscopic Survey of Blue-Yellow Defects Among School Children in Santiago

Published online by Cambridge University Press:  01 August 2014

R. Cruz-Coke ,
L. Rivera ,
J. Mardones  and
C.Y. Valenzuela
R. Cruz-Coke*
Affiliation:
Genetic Section, Hospital Aguirre, University of Chile, Santiago, Chile
L. Rivera
Affiliation:
Genetic Section, Hospital Aguirre, University of Chile, Santiago, Chile
J. Mardones
Affiliation:
Genetic Section, Hospital Aguirre, University of Chile, Santiago, Chile
C.Y. Valenzuela
Affiliation:
Genetic Section, Hospital Aguirre, University of Chile, Santiago, Chile
*
Genetic Section, Hospital Clinico J.J. Aguirre, Santiago, Chile

Abstract

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A survey of color vision defects was performed on a random sample of 138 Santiago male school children aged 14-15 years. Over-all incidence of red-green defects was found to be 4.34 percent. Blue-yellow minor defects were found in 17 cases (12 percent). The following major defects were found: extreme tritanomaly plus extreme tetartanomaly (1 case), and extreme tetartanomaly plus weak tritan defects (2 cases).

These results suggest a probable incidence of 2.16 percent of congenital blue blindness in the general male population of Santiago, Chile.

Type
8. Free Contributions: Fourth Group
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 23 , supplement S1 , January 1974 , pp. 363 - 365
Copyright
Copyright © The International Society for Twin Studies 1974

References

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