The incidence of refractive errors among school children in Hong Kong and its relationship with the optical components

Siu Yin Lam, Winnie SH Goh

Research output: Journal article publicationJournal articleAcademic researchpeer-review

88 Citations (Scopus)


This study aims to provide information about the prevalence of refractive errors among Chinese school children in Hong Kong, and its relationship with the optical components of the eye. Subjective refraction, corneal curvatures and ocular biometry were performed on 383 school children from age six to 17 years. The prevalence of myopia increases from 30 per cent at age six to seven to 50 per cent (girls) and 70 per cent (boys) at age 16–17. The mean spherical equivalent refraction gradually changes from plano at age six to seven to ‐2.00 D of myopia at age 1617. Our results are different from Caucasian data but comparable with those of other studies of Chinese in Asia. The increase in myopia correlates well with the axial length of the eye. Further studies are needed to investigate the cause for the development of myopia.
Original languageEnglish
Pages (from-to)97-103
Number of pages7
JournalClinical and Experimental Optometry
Issue number3
Publication statusPublished - 1 Jan 1991


  • Chinese
  • Hong Kong
  • myopia prevalence
  • optical components
  • school children

ASJC Scopus subject areas

  • Ophthalmology
  • Optometry

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