PURPOSE: The aim of our study was to investigate on a large population if reading, writing, working on a computer or watching television might be associated with the occurrence of myopia. MATERIAL AND METHODS: A total of 5865 schoolchildren were examined (2792 boys and 3073 girls, at the age 6-18 years, mean age 11.9, S.D. 3.3). The examination included retinoscopy under cycloplegia induced with 1% tropicamide. Myopia was defined as a spherical equivalent of at least -0.50 dioptres. Mean refractive error was -1.2, SD 1.3. (The students and their parents completed a questionnaire on the child's visual work. Data analysis was performed using independence chi-squared Pearson test; p-values of <0.05 were considered statistically significant. RESULTS: It was observed that myopia occurs more often in students who read and write >2 hours/day (p<0.001), and also work >0.8 hours/day on a computer (p<0.01). Furthermore, no increase in the prevalence of myopia in subjects who spend >2 hours/day watching television was found (p>0.05). CONCLUSIONS: The obtained results indicate that reading, writing, working on a computer might be associated with the occurrence of myopia among schoolchildren. Watching television is not related to the occurrence of myopia.
PURPOSE: The aim of our study was to investigate on a large population if reading, writing, working on a computer or watching television might be associated with the occurrence of myopia. MATERIAL AND METHODS: A total of 5865 schoolchildren were examined (2792 boys and 3073 girls, at the age 6-18 years, mean age 11.9, S.D. 3.3). The examination included retinoscopy under cycloplegia induced with 1% tropicamide. Myopia was defined as a spherical equivalent of at least -0.50 dioptres. Mean refractive error was -1.2, SD 1.3. (The students and their parents completed a questionnaire on the child's visual work. Data analysis was performed using independence chi-squared Pearson test; p-values of <0.05 were considered statistically significant. RESULTS: It was observed that myopia occurs more often in students who read and write >2 hours/day (p<0.001), and also work >0.8 hours/day on a computer (p<0.01). Furthermore, no increase in the prevalence of myopia in subjects who spend >2 hours/day watching television was found (p>0.05). CONCLUSIONS: The obtained results indicate that reading, writing, working on a computer might be associated with the occurrence of myopia among schoolchildren. Watching television is not related to the occurrence of myopia.
Authors: Hongyu Guan; Ning Neil Yu; Huan Wang; Matthew Boswell; Yaojiang Shi; Scott Rozelle; Nathan Congdon Journal: PLoS One Date: 2019-04-26 Impact factor: 3.240
Authors: Si Ning Goh; Long Hua Teh; Wei Rong Tay; Saradha Anantharaman; Rob M van Dam; Chuen Seng Tan; Hwee Ling Chua; Pey Gein Wong; Falk Müller-Riemenschneider Journal: BMJ Open Date: 2016-01-25 Impact factor: 2.692