Time Spent Outdoors Partly Accounts for the Effect of Education on Myopia - Clark, R; Kneepkens, SCM; Plotnikov, D; Shah, RL; Huang, Y; Tideman, JWL; Klaver, CCW; Atan, D; Williams, C; Guggenheim, JA; UK Biobank Eye; Vision Consortium (2023)
natural-experiment; evidence grade B