Nghiên cứu tỷ lệ cận thị học đường ở học sinh tiểu học và trung học cơ sở Hà Nội năm 2009

Aim: to study the prevalence of refractive error of scholars at Hanoi. Methods: cross-sectional and prospective study in 2009. The study carry out on 6.184 scholars (3.222 males, 2.962 females) from primary and secondary schools, of 4 districts in Hanoi, aged 7-15 years. Results: the prevalence of myopia (SE at least - 0.75D): 33,7 percent. The rate of myopia in female scholars (35.0 percent) were than male scholars (32.5 percent), (p 0.05). The rate of myopia in Ba Dinh district (42.3 percent), Thanh Xuan district (41.0 percent) and Tu Liem (44.3 percent) were higher than the Dong Anh district (18.8 percent), (p0.001).