Sánchez-Tocino, H.Villanueva Gómez, A.Gordon Bolaños, C.Alonso Alonso, I.Vallelado Alvarez, A.García Zamora, M.Francés Caballero, E.Marcos-Fernández, M.Schellini, S. [UNESP]Galindo-Ferreiro, A.2019-10-062019-10-062019-01-01Journal Francais d'Ophtalmologie, v. 42, n. 1, p. 2-10, 2019.0181-5512http://hdl.handle.net/11449/188496Purpose: To investigate potential risk factors for the progression of myopia. Methods: Prospective study. Myopic progression was evaluated by cycloplegic autorefraction and axial length (AL) every 6 months in children 6 to 15 years old. Univariate analysis and multiple logistic regression were applied. Results: Around 82 children with median age of 10.3 ± 2.3 years. Myopia progressed by −0.816 ± 0.6 D over 18 months. Increased myopic spherical equivalent refraction (SER) was correlated with increase in AL (P < 0.001). Univariate analysis found SER to be significantly associated with: age, especially between 6 and 9.4 years old (P = 0.001), parental myopia (P = 0.028), and less time spent outdoors (P = 0.009). There was a significantly greater increase in SER during months with the least daylight hours (P < 0.001). Conclusion: Outdoor activities and daylight have a protective effect against increased AL and progression of myopia. Younger children with significant myopia should be monitored closely, especially those around 6 years old with myopic parents.2-10engChildrenMyopiaOutdoor activitiesProgressionRisk factorsArtigo10.1016/j.jfo.2018.05.008Acesso aberto2-s2.0-85058440662