Daytime sunlight is not the only exposure factor correlated with myopia. Nighttime artificial lighting is also a negative: https://www.nature.com/articles/2009

Daytime sunlight is not the only exposure factor correlated with myopia. Nighttime artificial lighting is also a negative: https://www.nature.com/articles/20094 https://www.nature.com/articles/20094 There's a review here: https://www.sciencedirect.com/science/article/pii/S1350946212000444?casa_token=oVlVx0hn7O0AAAAA:LQirdPusExuHkc1xOCP3rS_4guOS6K0TaNjMLnDWMbrpm3MA4LOvfuyR5TQQm-b6qPe9xkov9xA https://www.sciencedirect.com/science/article/pii/S135094621...