Refractive status analysis on children of migrant workers′ schools in Huacao community of Shanghai

ObjectiveTo provide a scientific basis for the prevention and treatment of ametropia, and ascertain the refractive status and influencing factors for migrant children in Huacao community

MethodsAnalysis was done through investigation of mydriatic refractive factors and review of questionnaires by 851 students of the migrant children schools.

ResultsBoys had better visual acuity than girls; boys had smaller corneal curvature than girls; males had longer axial lengths than females, and the differences were statistically significant; as the grade went up, students′ visual acuity, spherical equivalent, corneal curvature decreased gradually, with the growth of the higher grade axial length, the difference was statistically significant; comparison of different diopter groups visual acuity, and axial length were significantly different, and the correlation between diopter and visual acuity were positive (r=0.31, P < 0.001), and negatively correlated with axial length (r=-0.204, P < 0.001);in different diopter groups, as myopia deepened, it was found that the average homework time for students tended to increase while the daily outdoor activity time for them had a tendency to decrease; the differences proved to be statistically significant to the change in dioptor, suggesting that outdoor activities for a longer time was a protective factor in the prevention of myopia, and longer homework time a risk factor for myopia.

ConclusionRefractive examination is helpful to understand the refractive status of students in migrant workers′ schools in the Huacao community, and suggests targeted interventions and personalized advice, playing a positive role in reducing students′ refractive errors.