Guangzhou Twin Eye Study (GTES)
The GTES study investigated the genetic and environmental determinants of myopia. Since 2006, almost 1,300 twin pairs from Guangzhou, South China, aged 7 to 15 years, residing near the Zhongshan Ophthalmic Centre in Guangzhou, South China, have been recruited from the Guangzhou Twin Registry. The cohort consisted entirely of Han Chinese twins, including both monozygotic and dizygotic pairs. Participants have been followed up annually through 2023, with plans for continued data collection to explore long-term outcomes.
Study design
Cohort, Registry, Cohort - twin
Number of participants at first data collection
1,291 (twin pairs as of 2023)
Recruitment is ongoing
Age at first data collection
7 - 15 years (twin pairs)
Participant year of birth
Varied (twin pairs)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
2006
Primary Institutions
Sun Yat-sen University (中山大学; SYSU)
University of Melbourne
Links
Profile paper DOI
Funders
Fundamental Research Funds for the Central Universities
Guangdong Provincial Department of Science and Technology
National Natural Science Foundation of China (国家自然科学基金委员会, NSFC)
Ongoing?
Yes
Data types collected
- Computer, paper or task testing (e.g. cognitive testing, theory of mind doll task, attention computer tasks)
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Secondary data
- Self-report questionnaire – paper or computer assisted
- None
- Magnetic Resonance Imaging (MRI)
- Other government data
Engagement
Keywords
Consortia and dataset groups
