biostudies-literatureUnknown3(2)Sumra KA<h4>Objective</h4>To estimate the prevalence of myopia and explore its risk factors in adolescents aged 10-16 years in Karachi, Pakistan.<h4>Methods and analysis</h4>This cross-sectional analytical study was conducted with 335 adolescents from 4 public and 2 private schools in Karachi. Data were collected using a structured questionnaire. Cox proportional hazards regression analysis was used to assess associations between myopia and various risk factors.<h4>Results</h4>The study found that the prevalence of myopia was 54% among participants. Multivariate analysis revealed a significant association between myopia and sleep quality as well as time spent on reading/writing activities. Adolescents with a sleep quality score greater than or equal to 4 had a 1.63 times higher likelihood of myopiBMJ public healthe002004https://www.ebi.ac.uk/biostudies/studies/S-EPMC12306310biostudies-literatureFrequency of myopia and associated risk factors in the adolescent population (10-16 years) of Karachi, Pakistan: a cross-sectional study.PMC12306310Maqbool AMSubash TShamsi UAbiha UESumra KAKhajurani NKAli SZafar KASultan UIqbal RAtif SImran KBanani IMustansir AfalseFrequency of myopia and associated risk factors in the adolescent population (10-16 years) of Karachi, Pakistan: a cross-sectional study.<h4>Objective</h4>To estimate the prevalence of myopia and explore its risk factors in adolescents aged 10-16 years in Karachi, Pakistan.<h4>Methods and analysis</h4>This cross-sectional analytical study was conducted with 335 adolescents from 4 public and 2 private schools in Karachi. Data were collected using a structured questionnaire. Cox proportional hazards regression analysis was used to assess associations between myopia and various risk factors.<h4>Results</h4>The study found that the prevalence of myopia was 54% among participants. Multivariate analysis revealed a significant association between myopia and sleep quality as well as time spent on reading/writing activities. Adolescents with a sleep quality score greater than or equal to 4 had a 1.63 times higher likelihood of myopi2025-01-01T00:00:00Z20252026-03-31T11:14:25.79Z2025-08-30T03:06:16.623ZS-EPMC123063104073495810.1136/bmjph-2024-002004