Methods for a population-based study of myopia and other eye conditions in school children: the Sydney Myopia Study

Ophthalmic Epidemiol. 2005 Feb;12(1):59-69. doi: 10.1080/09286580490921296.


Purpose: The Sydney Myopia Study will establish the prevalence of myopia and other eye diseases in a large representative sample of Sydney school children. It will also examine the relationship between myopia and potential modifiable risk factors and will assess potential gene-environment interactions by examining parents and siblings.

Methods: The target population is a stratified random cluster sample of 1750 Year 1 (age 6 years) and 1500 Year 7 (age 12 years) students from Sydney metropolitan schools. Procedures (comprehensive parent-administered questionnaire and examination) involve standardized protocols to allow for comparison with international population-based data. Examinations include a detailed assessment of visual acuity, cover testing for strabismus, identification of amblyopia, slit-lamp examination, non-contact ocular biometry and cycloplegia (cyclopentolate) followed by autorefraction, optical coherence tomography, retinal thickness measurement, digital mydriatic retinal photography and aberrometry.

Conclusions: The Sydney Myopia Study design and methodology will ensure valid findings on ocular development and health in a large representative sample of Sydney school children, for comparison with other population-based refraction data.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Australia / epidemiology
  • Child
  • Child, Preschool
  • Eye Diseases / diagnosis
  • Eye Diseases / epidemiology
  • Eye Diseases / physiopathology
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Myopia / epidemiology*
  • Myopia / physiopathology
  • Population Surveillance / methods*
  • Refraction, Ocular / physiology
  • Reproducibility of Results
  • Retrospective Studies
  • Surveys and Questionnaires
  • Tomography, Optical Coherence