A Study of Prevalence of Congenital Color - Blindness, among School Students in Hamadan City in 1995-96

Abstract

This research was carried out to determine the prevalence of congenital color blindness among students of Hamadan city, Iran, in 1995-96. 706pupils were surveyed by a random sample.Personal characteristics such as sex, age, socio-economic condition were recorded.Ishi-hara test was used to measure congenital color-blindness. Moreover, information of eye diseases were obtained using eye examination. The results were analyzed using SPSS. The results indicated that4.4% of the population had congenital color- blindness ( 7% of the boys and 0.35% of the girls)P<0.05.The results did not show any significance difference in different age groups and socio -economic status. Therefore it was suggested to use Ishi-hara test for children at the beginning of the primary school course.

Keywords

• color vision defects - congenital/ perception tests/ students