Incidence of color blindness among Urmia high schools students

Colorblindness is a kind of disorder in perception of color which is x- linked and congenital and it is seen mostly in men.The aim of this study is determining incidence of color blindness in Urmia high schools students. This is a cross-sectional and perspective study. Two thousands boy and girl high school students underwent study. All of students were screened by color vision test in natural light. For every color vision defects cases were completed a questionnaire containing sex, familial marriage of parents and relationship of familial marriage of parents. Data collected analyzed by using Excel software. From 2000 students (1000 for boys and 1000 for girls) which were examined, 40 students of them (2%) were color blind,which 36 of them (3.6%) were boys and 4 of them (0.4%) were girls.Out of all kinds of colorblindness, 25 students (1.25%) were total,13 students (0.65%) were Deutan and 2 students (0.1%) were protan. Also, the parents of 5 students out of 40 color blind (12.5%) had familial marriage that colorblindness of 4 students (10%) were Total, and was 1 student was Deutan (2.5%). 87.5% of them had no familial marriage. Although, there are difference between color blindness prevalence reported from various areas of world and results of this study but there is a similar between all of reports and results of this study.