Profile of Amblyopia Among Children Aged from 5 to 15 Years at Hawassa University Comprehensive Specialized Hospital Pediatric Eye Clinic, South Ethiopia, 2020/21.

Purpose: Functional visual impairment in children is mostly caused by amblyopia. Permanent visual impairment is caused by belated treatment of amblyopia and underlying causes, mostly due to the lack of awareness. Amblyopia affects children's school performance, social interaction and motor skills. This study was aimed to assess the profile of amblyopia among children aged from 5 to 15 years. Methods and Materials: A hospital-based, cross-sectional study was done from November to April 2020/21. Data were collected from all children who came to Hawassa university comprehensive specialized hospital pediatric eye out patient department in the data collection period. Visual acuity measurement, slit lamp examination, cycloplegic refraction, cover test and dilated fundus examination were conducted. Data was entered in Epi-info version 7 and analyzed by Statistical Package for Social Science version 20. Descriptive statistics were conducted to estimate the proportion of amblyopia and its causes. Results: The proportion of amblyopia was 23.8% (18.3-29.7). Most of the participants were within the age range of 5-9 years (55.4%) and males (51.5%). Anisometropia was the commonest cause of amblyopia (31.25%), followed by meridional (20.83), mixed (16.67%), isometropia (12.50%), sensory deprivation (10.42%) and strabismus (8.33%). Conclusion: The proportion of amblyopia was 23.8%. Anisometropia, meridional, sensory deprivation, isometropia, mixed type and strabismus were the identified causes of amblyopia.

Prevalence and Factors Associated with Myopia Among High School Students in Hawassa City, South Ethiopia, 2019.

Purpose: Myopia is one of the avoidable causes of visual impairment. Twenty-seven percent of the world population were myopic in 2010 and after 30 years it is expected half of the peoples in the planet will become myopic. The aim of this study was to determine the prevalence and factors associated with myopia among high school students. Materials and Methods: A cross-sectional school-based study design using stratified simple random sampling technique was used to select 349 high school students from 21 high schools in Hawassa city. The study was conducted from April 24 to May 7, 2019. Structured questionnaire, six meter Snellen visual acuity chart, trial frame, trial set, retinoscope and cyclopentolate 1% eye drops were used to collect data. Data were analyzed using Statistical Package for Social Science (SPSS) version 20 computer software. Variables having p-value <0.05 in multivariate logistic regression were considered as statistically significant. Results: A total of 349 participants having a response rate of 97% were involved with the mean age of 16.90±1.32 years. Prevalence of myopia was 16.05% (95%CI: 12.6, 20.1). Early age of schooling (adjusted odds ratio, AOR=3.14; 95%CI: 1.16, 10.06), parents being myopic (AOR=8.46; 95%CI: 7.11, 12.08), prolonged near work (AOR=11.65; 95%CI: 2.11, 64.5), short working distance (AOR=10.90; 95%CI: 0.57, 20.55), lack of outdoor sport activities (AOR=7.37; 95%CI: 2.71, 20.03) and visual display unit (VDU) usage (AOR=8.36; 95%CI: 2.39, 29.33) were variables significantly associated with myopia. Conclusion and Recommendations: The prevalence of myopia was high in the study area. Early age of schooling, parents being myopic, prolonged near work, short working distance, lack of outdoor sport activities, and visual display unit usage were variables significantly associated with myopia. There should be strategies to prevent visual impairments secondary to myopia with affordable optical corrections and appropriate use of visual display units.

A cross-sectional analysis of refractive error prevalence and associated factors among elementary school children in Hawassa, Ethiopia.

OBJECTIVE: This study assessed the prevalence of refractive error (RE) and its associated factors among elementary school children in Hawassa, Ethiopia. METHODS: In this school-based cross-sectional study, a random selection technique with proportional allocation was used to ensure a representative sample of students. Survey questionnaires were used to collect sociodemographic, environmental, and family history data. Clinical examinations were performed to assess RE and ocular health. Associations between dependent and independent variables were computed using adjusted odds ratios (AORs) and 95% confidence intervals (CIs). RESULTS: Overall, 529 children participated in this study, with a response rate of 95.5% (529/554). Most participants were aged ≥12 years (337 [63.7%]), in grade levels 5 to 8 (307 [58%]), and attended public schools (366 [69.2%]). RE prevalence was 12.9% (95% CI: 10.0-16.1). Higher grade level (AOR=3.18, 95% CI: 1.68-5.97), positive family history of RE (AOR=3.69, 95% CI: 1.57-8.67), lack of paternal formal education (AOR=3.25, 95% CI: 1.20-8.77), and public school attendance (AOR=3.33, 95% CI: 1.52-7.27) were factors significantly associated with RE. CONCLUSIONS: RE prevalence among elementary school children in Hawassa was higher than in previous reports. Grade level, family history, paternal education level, and school type significantly influenced RE status.