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Inducement and Evaluation of a Murine Model of Experimental Myopia
Published on: January 22, 2019
Testing protocol and recruitment in the genes in myopia twin study
M Dirani1, M Chamberlain, P Garoufalis
1Centre for Eye Research Australia, The University of Melbourne, Melbourne, Victoria, Australia. m.dirani@pgrad.unimelb.edu.au
Ophthalmic Epidemiology
|June 24, 2008
Summary
The Genes in Myopia Twin Study examined twins to understand myopia genetics. Myopia prevalence was 29.7%, with higher participation in monozygotic twins.
Area of Science:
- Ophthalmology
- Genetics
- Twin Studies
Background:
- Myopia, or nearsightedness, is a growing public health concern.
- Understanding the genetic and environmental factors contributing to myopia is crucial for developing effective interventions.
Purpose of the Study:
- To assess the relative genetic contribution to refractive error using a classical twin model.
- To detail the methodology, recruitment, and myopia prevalence within the Genes in Myopia Twin Study.
Main Methods:
- Recruited Victorian twins aged 18+ from the Australian Twin Registry.
- Conducted general questionnaires, comprehensive eye examinations, and collected blood samples.
- Defined myopia as spherical equivalent worse than or equal to -0.50 diopters in at least one eye.
Main Results:
- 627 twin pairs (345 monozygotic, 267 dizygotic) participated.
- Response rates were 19.8% for monozygotic and 11.7% for dizygotic twins.
- The overall prevalence of myopia was 29.7%.
Conclusions:
- The Genes in Myopia Twin Study is the first Australian adult twin study on refraction and the largest globally.
- A comprehensive protocol created a valuable twin database for genetic analysis.
- Participation varied by zygosity, gender, and age.
