Cone photoreceptor density in the Copenhagen Child Cohort at age 16-17 years.

Purpose: To examine cone density in relation to gestational and morphological parameters in the Copenhagen Child Cohort (CCC2000).

Methods: The macula was imaged using adaptive optics in 1,296 adolescents aged 16-17 years. Axial length and distance visual acuity were determined.

Low physical activity and higher use of screen devices are associated with myopia at the age of 16-17 years in the CCC2000 Eye Study.

Purpose: To determine the myopia prevalence in a Danish cohort aged 16-17 years and its relation to physical activity and use of screen-based electronic devices.

Methods: The Copenhagen Child Cohort 2000 Eye Study is a prospective, population-based, observational study. Information about use of screen devices and physical activity was obtained using questionnaires.