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  • Title: Color vision deficiency in Zahedan, Iran: lower than expected.
    Author: Momeni-Moghaddam H, Ng JS, Robabi H, Yaghubi F.
    Journal: Optom Vis Sci; 2014 Nov; 91(11):1372-6. PubMed ID: 25237763.
    Abstract:
    PURPOSE: To estimate the prevalence of congenital red-green color vision defects in the elementary school students of Zahedan in 2012. METHODS: In this cross-sectional study, 1000 students with a mean (±SD) age of 9.0 (±1.4) years were selected randomly from a large primary school population. Color vision was evaluated using the Ishihara pseudoisochromatic color plates (38-plate edition). A daylight fluorescent tube was used as an illuminant C equivalent (i.e., 860 lux, color rendering index greater than 92, and color temperature = 6500 K). Having more than three misreadings on the test was considered a failing criterion. Data were analyzed in SPSS version 17 software using χ2 tests. RESULTS: Nine students (0.9%) made more than three errors on the Ishihara test. Based on this criterion, the prevalence of red-green color vision deficiency in girls and boys was 0.2 and 1.6% (p = 0.02), respectively. CONCLUSIONS: The prevalence of red-green color vision deficiency was found to be significantly lower in Zahedan than comparable reports in the literature.
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