9Committee on Practice and Ambulatory Medicine,Section on Ophthalmology.American Association of Certified Orthoptists;American Association for Pediatric Ophthalmology and Strabismus;American Academy of Ophthalmology.Eye examination in infants,children,and young adults by pediatricians[J].Pediatrics,2003,111:902-907.
10Dorairaj S K,Bandrakalli P,Shetty C R,et al.Childhood blindness in arural population of Sonthern india[J].Prevalence Etiol,2008,15:176-182.