Factors Occurrence of Refractive Error in Grade 3 Junior High School Al-Azhar in Medan City 2018

Objective To examine the influences of multifactors causing refractive error in a population based sample of grade 3 Junior High School Al-Azhar children. Method The study was conducted on junior high school students of Al-Azhar Medan 3rd grade. Students were collected for a visual acuity examination of vision using Snellen Chart and Trial Lens and then filled out the prepared questionnaires, were interviewed by trained fieldworkers using a structured questionnaire. Then collected data and presented in tabulation of data. Results With chi-square test found significant relationship between female gender, genetic history, reading while sleeping and reading with unfit sitting position, doing outdoor activities after school and the intensity of exercise in a week with the occurrence of refractive error in grade 3 student of Junior High School Al-Azhar Medan. By multivariate analysis test, from all variables in this research, found 2 variables that directly affect the refractive error, there are the history of parents always use glasses and reading books while lying down. Conclusions History of parents always use glasses and reading position while sleeping is the factor that most affect the occurrence of refractive errors in grade 3 students of Junior High School Al-Azhar Medan in 2018. Refractive error, Al-Azhar junior high school, multivariate test.