A 2-year longitudinal study of myopia progression and optical component changes among Hong Kong schoolchildren.
This study investigated refractive error and optical component changes in a group of 142 Hong Kong schoolchildren from age 6 to 17 years over a 2-year period between 1991 and 1993.
Subjects were refracted subjectively and corneal curvatures and ocular dimensions were measured.
At the end of the 2-year study, the mean spherical equivalent refraction (SER) was - 1.86 D (SD 1.99 D) and 62% of the schoolchildren were myopic.
The annual incidence of myopia was 11.8%. Children aged 10 years and under had a greater change in SER toward myopia than older children.
The annual rate of myopia progression for the myopic children was - 0.46 D (SD 0.40 D) and the rate of progression was greatest between age 6 and 10 years old.
Vitreous depth/axial length elongation was the main component contributing to the progression of myopia.
Hong Kong schoolchildren develop myopia as early as 6 years old and myopia progresses at a greater rate compared with children of European extraction.
Mots-clés Pascal : Myopie, Etude longitudinale, Evolution, Hong Kong, Chine, Asie, Enfant, Homme, Age scolaire, Oeil pathologie, Trouble vision, Trouble réfraction oculaire
Mots-clés Pascal anglais : Myopia, Follow up study, Evolution, Hong Kong, China, Asia, Child, Human, School age, Eye disease, Vision disorder, Refractive error
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0404787
Code Inist : 002B09K. Création : 22/03/2000.