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Journal of Ophthalmology
Volume 2018, Article ID 1926736, 4 pages
Research Article

Stereoacuity of Black-White and Red-Green Patterns in Individuals with and without Color Deficiency

1The First Hospital of Jilin University, Changchun, China
2The Second Hospital of Jilin University, Changchun, China
3Ophthalmology Hospital of Hebei Province, Hebei, China

Correspondence should be addressed to Ying Sun; nc.ude.ulj@nus_y

Received 23 March 2018; Revised 6 July 2018; Accepted 12 July 2018; Published 1 August 2018

Academic Editor: Lisa Toto

Copyright © 2018 Ying Sun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Chromatic contrast may affect stereopsis. Daltonism is a common color deficiency in which the colors red and green are incorrectly detected. The aim of this study was to evaluate the stereoacuity of color-defective individuals presented with color symbols that they see defectively. Methods. Ten students diagnosed with daltonism and 10 students with normal color vision were recruited. A stereopsis test system using a phoropter and two 4K smartphones was used. Contour-based graphs and random-dot graphs with black versus white and red versus green patterns were used as test symbols. The Wilcoxon signed rank test was used to test the difference between groups. Results. No significant difference in stereoacuity was found between contour-based and random-dot graphs within both daltonism cohort and normal color vision cohort (). A significant difference in stereoacuity was found between the black-white () and red-green () graphs for the daltonism cohort, while no significant difference in stereoacuity was found for the normal color vision cohort (). Conclusion. Chromatic contrast is an influential factor for stereopsis measurement in individuals with color deficiency.