Actively Recruiting
Impact of Glasses for Vision Problems on Cognitive Function in Rural Older Adults
Led by Yuju Wu · Updated on 2026-05-14
964
Participants Needed
1
Research Sites
268 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
The aim of this project is to explore whether vision correction can effectively slow cognitive decline in older adults. The primary question it seeks to answer is: Can providing free near and/or distance vision correction glasses to older adults with refractive errors or uncorrected vision, who have normal baseline cognition and hearing, reduce the rate of cognitive decline over 36 months in a cost-effective manner? Researchers will compare the rate of cognitive decline over 36 months between older adults who receive refractive correction and those who do not.
CONDITIONS
Official Title
Impact of Glasses for Vision Problems on Cognitive Function in Rural Older Adults
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Registered as a rural resident holding rural household registration
- Aged 60 to 79 years at the time of enrollment
- Living in the household for at least 3 months and planning to stay in the area for the study duration
- Distance vision impairment with presenting visual acuity less than 6/12 in the better-seeing eye and improving to 6/7.5 or better in either eye with glasses
- Near vision impairment with presenting near visual acuity less than 6/12 at 40 cm binocularly and improving to 6/7.5 or better in either eye with near correction
- Able to move independently with or without a walking stick
- Chinese Mini-Mental State Examination (C-MMSE) score above set cut-offs based on education level: above 17 if illiterate, above 20 for primary school education, above 22 for junior high school education, and above 23 for high school education or above
- Willing to participate, accept random assignment to any study group, and follow study procedures
You will not qualify if you...
- Having glaucoma or significant cataract or history of surgery for major eye conditions
- Regular use of prescription glasses or hearing aids
- Serious medical illness likely to lead to loss of follow-up, though mild hypertension or diabetes is allowed
- Failing the whispered voice hearing test in the better ear (unable to correctly repeat at least 3 out of 6 whispered words at 50 cm distance)
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Community health service centers
Ya'an, Sichuan, China, 610065
Actively Recruiting
Research Team
Y
Yuju Wu
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
SINGLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
PREVENTION
Number of Arms
2
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