title: Reply to the Letter to the Editor, "Association between Exposure to Smartphones and Ocular Health in Adolescents".
authors.affiliation: a Seoul National University College of Medicine , Seoul , Korea.
authors.forename: Joowon
authors.initials: J
authors.lastname: Kim
authors.affiliation: b Department of Preventive Medicine , Seoul National University College of Medicine , Seoul , Korea.|c Cancer Research Institute, Seoul National University , Seoul , Korea.|d Department of Biomedical Science , Seoul National University Graduate School , Seoul , Korea.
authors.forename: Yunji
authors.initials: Y
authors.lastname: Hwang
authors.affiliation: e Department of Ophthalmology , Seoul National University , Seoul , Korea.
authors.forename: Hyeong Gon
authors.initials: HG
authors.lastname: Yu
authors.affiliation: b Department of Preventive Medicine , Seoul National University College of Medicine , Seoul , Korea.|c Cancer Research Institute, Seoul National University , Seoul , Korea.|d Department of Biomedical Science , Seoul National University Graduate School , Seoul , Korea.
authors.forename: Sue K
authors.initials: SK
authors.lastname: Park
mesh_terms: D000293:Adolescent; D005123:Eye; D006801:Humans; D000068997:Smartphone