Risk Factors of Myopia
Myopia is surging globally, driven by lifestyle factors, with outdoor time offering key protection
By
Aldo Vagge
Carla Lança
Stephanie Kearney
Andrzej Grzybowski
May 14, 2026
1
Myopia prevalence has increased globally from 23% in 2000 to an estimated 34% in 2020, with projections nearing 50% by 2050.
2
High myopia significantly raises the risk of serious eye conditions, including myopic maculopathy, retinal detachment, glaucoma, and cataract.
3
Family history is a strong predictor of myopia, with children of myopic parents facing doubled or quintupled risks depending on parental myopia.
4
Increasing outdoor time is a protective factor against myopia, with studies showing that an additional hour outdoors can reduce incidence by 45%.
5
Urban living correlates with higher myopia rates due to limited outdoor access and increased academic pressures, compounding the risk.