Status:
COMPLETED
PROductivity Study of Presbyopia Elimination in Rural-dwellers (PROSPER)
Lead Sponsor:
Congdon Nathan
Collaborating Sponsors:
Queen's University, Belfast
Clearly
Conditions:
Presbyopia
Eligibility:
All Genders
40+ years
Phase:
NA
Brief Summary
This trial seeks to establish, using a randomized, controlled design, the impact of near eyesight correction on the productivity of presbyopic agricultural workers in India, as measured by weight of t...
Detailed Description
Main research question being addressed: To establish, using a randomized, controlled design, the impact of near eyesight correction on the productivity of presbyopic agricultural workers in India, as ...
Eligibility Criteria
Inclusion
- Employee of APPL for 1 year
- Aged \>= 40 years
- Habitual near visual acuity of \>= 0.8M (\<=6/12) at 40cm in both eyes, correctable to \<=0.5M (\>=6/7.5) in both eyes with near glasses
- Uncorrected distance vision \>= 6/7.5 in the better-seeing eye
- The participant worked and has data available on weight of tea picked for \>=10 days in the previous 4 weeks (This will largely exclude men in this setting).
- Ability to give informed consent
Exclusion
- Eye disease detected on baseline eye exam
- Current ownership of near correction capable of improving near visual acuity to \<= 0.8M (\>= 6/12) in either eye
- Unlikely to complete follow-up due to unsatisfactory work performance, plans to move out of the area, etc.
- Need for distance correction to achieve distance vision of \>= 6/7.5 in the better-seeing eye.
- Inability to achieve best-corrected visual acuity with spherical power glasses only (that is: need for astigmatic correction to achieve best-corrected near visual acuity)
- Persons with eye problems detected on the examination will be referred for definitive care at local facilities, and distance refractive errors will be corrected with free bifocals for those with uncorrected VA \< 6/12 in the better-seeing eye.
Key Trial Info
Start Date :
July 24 2017
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
October 28 2017
Estimated Enrollment :
751 Patients enrolled
Trial Details
Trial ID
NCT03228199
Start Date
July 24 2017
End Date
October 28 2017
Last Update
December 27 2017
Active Locations (1)
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1
Amalgamated Plantations Private Limited (APPL)
Tezpur, Assam, India