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Evaluation of a County-Based Eye Health Service Model in Rural Chinese Children
Sponsor: Zhongshan Ophthalmic Center, Sun Yat-sen University
Summary
This project proposes to conduct a prospective, multicenter registry study in rural China to evaluate, under real-world conditions, the implementation effectiveness of an integrated child eye health service model centered at the county level and coordinated across county, township, village, and school tiers. The target population will include all children and adolescents within participating counties, and the primary exposure will be the annual coverage and implementation intensity of this service model. The study will focus on its impact on clinical outcomes such as refractive error correction rates and referral rates following eye disease screening, while also examining annual trends in disparities in access to different eye care services. Through long-term and systematic observation, the project aims to clarify the sustained effects of this eye health service model on improving the management of pediatric eye diseases, enhancing visual function, and promoting health equity, thereby providing evidence-based support for optimizing the rural child eye care system in China.
Official title: Evaluation of a County-Based Eye Health Service Model for Preventing and Controlling Avoidable Visual Impairment in Rural Chinese Children
Key Details
Gender
All
Age Range
3 Years - 18 Years
Study Type
OBSERVATIONAL
Enrollment
20000
Start Date
2025-01-01
Completion Date
2028-12-31
Last Updated
2026-04-23
Healthy Volunteers
Yes
Conditions
Interventions
School-based Eye Health Screening
This intervention consists of standardized annual school-based eye health examinations conducted under routine field conditions. Basic demographic information, including sex and age, is first recorded. Visual acuity testing is performed before intraocular pressure measurement or any other examination that may affect vision. Uncorrected visual acuity and, where applicable, presenting visual acuity are measured using a standard logarithmic visual acuity chart or ETDRS chart. For participants whose visual acuity is worse than 0.8, pinhole visual acuity is additionally assessed. Intraocular pressure is measured using non-contact tonometry (NCT). For children suspected of strabismus or amblyopia, further assessments may include ocular position examination, alternate cover testing, corneal light reflex testing, angle measurement, and an automatic smartphone-based Digital Ruler of Strabismus (DRS). Refraction is measured using a computerized autorefractor. This screening workflow enables syst
Locations (1)
Fengqing County People's Hospital
Lincang, Yunnan, China