This was part of the large-scale Tianjin Eye Study, a population-based cohort study that longitudinally investigates the relationship between the age, refraction, and development of childhood RE in Tianjin, China.
To determine the longitudinal changes of age and refraction in predicting myopia progression with risk under the coronavirus disease 2019 (COVID-19) pandemic in a 3-year follow-up of a Chinese cohort.