Effect of Vision Centers on Access to Eye Care and Eye Health Outcomes

This cluster-randomized trial aims to evaluate the effect of vision centers on access to eye care and eye health outcomes in South Asia. The main questions it aims to answer are: 1. Do vision centers improve effective refractive error coverage? 2. Do vision centers increase eye care center utilization? 3. Do vision centers improve population visual acuity? Researchers will compare outcomes in communities randomized to immediate versus delayed establishment of a vision center. Outcomes will be assessed through population-based surveys at baseline and after two years as well as through hospital records collected throughout the study period.

NCT Number	NCT07227714
Lead Sponsor	University of California, San Francisco Collaborators: Seva Foundation, Proctor Foundation
Conditions	Cataract Surgery, Eye Care, Glasses, Primary Eye Care, Vision Center, Eyecare Visits
Enrollment	150,000 participants
Start Date	2026-08-01
Primary Completion	2028-10-01 (estimated)
Study Completion	2028-12-01 (estimated)
Updated on ClinicalTrials.gov	2026-06-30