3He M, Huang W, Zheng Y, et al. Refractive error and visual impairment in school children in rural southern Chi- na[J]. Ophthalmology, 2007, 114(2) :374-378.
4The Pediatric Eye Disease Investigator Group. A compari- son of atropine and pathing treatments for moderate am- blyopia by patient age, cause of amblyopia, depth of am- blyopia, and other factors [ J ]. Ophthalmology, 2003, 110 ( 8 ): 1632-1637.