Decreased visual acuity is one of the most common eye health problems among school-aged children and may adversely affect learning performance, daily activities, and quality of life. Data regarding the prevalence of decreased visual acuity among students in Aceh Besar Regency remain limited; therefore, this study was conducted to provide an overview of this condition. This study aimed to determine the demographic characteristics based on age and sex and to identify the prevalence of decreased visual acuity among students of SMPIT Nurul Fikri, Darul Kamal District, Aceh Besar Regency. This quantitative descriptive study employed a cross-sectional design. A total of 124 students were recruited using a total sampling technique. Visual acuity was assessed using a Snellen chart, and the data were analyzed using univariate analysis. The results showed that most participants were male (59.7%) and aged 14–15 years (55.6%). Decreased visual acuity was identified in 47 students (37.9%), whereas 77 students (62.1%) had normal visual acuity. The condition was more frequently observed among female students (21.0%) than male students (17.0%) and among students aged 12–13 years (22.6%) than those aged 14–15 years (15.3%). These findings indicate that more than one-third of the students experienced decreased visual acuity, highlighting the importance of implementing regular vision screening and eye health education in schools to promote early detection and prevent visual impairment among school-aged children.
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