Effects of addressing presbyopia on productivity, retention and eye glasses adherence for workers in the readymade garment industry

Last registered on December 22, 2022

Pre-Trial

Trial Information

General Information

Title
Effects of addressing presbyopia on productivity, retention and eye glasses adherence for workers in the readymade garment industry
RCT ID
AEARCTR-0007142
Initial registration date
February 08, 2021

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
February 09, 2021, 7:36 AM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
December 22, 2022, 1:14 PM EST

Last updated is the most recent time when changes to the trial's registration were published.

Locations

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Primary Investigator

Affiliation
University of Michigan

Other Primary Investigator(s)

PI Affiliation
University of Michigan
PI Affiliation
Queen's University Belfast

Additional Trial Information

Status
On going
Start date
2021-03-01
End date
2025-06-30
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
In 2013, the World Health Organization (WHO) set eye health as a priority by creating the “Universal Eye Health: A Global Action Plan 2014-2019.” The WHO’s reasoning is intuitive; poor visual health can impair quality of life in a number of ways- by limiting physical activity, causing emotional health problems, and damaging work performance. In India, 55 million people suffer from presbyopia (the degeneration of sight related to age). Apart from the large-scale negative impact on quality of life, untreated visual impairments including presbyopia, are estimated to cost the Indian economy $37 billion in productivity losses annually. In this study, we aim to explore the effects of addressing presbyopia among workers in the context of the readymade garment industry in India. We will screen workers and provide eyeglasses to those with a presbyopic refractive error. We will explore adherence to eyeglasses, the effects on productivity, and the retention of such workers.

To do so, we propose a large-scale randomized controlled trial (RCT) in India which will: 1) measure adherence to eyeglasses; 2) observe the impact of glasses wear on productivity and attrition rate among these workers.
External Link(s)

Registration Citation

Citation
Adhvaryu, Achyuta, Nathan Congdon and Anant Nyshadham. 2022. "Effects of addressing presbyopia on productivity, retention and eye glasses adherence for workers in the readymade garment industry." AEA RCT Registry. December 22. https://doi.org/10.1257/rct.7142-2.0
Experimental Details

Interventions

Intervention(s)
We propose a large-scale randomized controlled trial (RCT) in India which will: 1) measure adherence to eyeglasses; 2) observe the impact of glasses wear on productivity and attrition rate among these workers.
Intervention Start Date
2021-03-01
Intervention End Date
2024-06-30

Primary Outcomes

Primary Outcomes (end points)
Adherence to glasses wear, productivity, self-reported well-being, visual quality of life, attitude towards glasses
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Participants will be randomized to decide their allotment to the treatment group (receive glasses at the start of the study and assistance mechanism for glasses adherence) or the control group (receive glasses at the end of the study).
Experimental Design Details
Not available
Randomization Method
Randomization done in office by a computer
Randomization Unit
Factory
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
1049 adults
Sample size: planned number of observations
1049 workers
Sample size (or number of clusters) by treatment arms
Treatment group: 525 adults receive glasses at the start of the study and assistance mechanism for glasses adherence; Control group: 524 adults receive glasses at the end of the study.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
University of Michigan IRB #3 - Behavioral Science - Health Sciences and Behavioral Sciences
IRB Approval Date
2021-02-02
IRB Approval Number
HUM00179252