{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T02:58:01Z","timestamp":1790650681575,"version":"4.1.0"},"reference-count":26,"publisher":"Public Library of Science (PLoS)","issue":"4","license":[{"start":{"date-parts":[[2024,4,3]],"date-time":"2024-04-03T00:00:00Z","timestamp":1712102400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Cartier Philanthropy"},{"DOI":"10.13039\/501100001311","name":"Ulverscroft Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001311","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec001\">\n<jats:title>Introduction<\/jats:title>\n<jats:p>Presbyopia, the leading cause of vision impairment globally, is common during working years. However, no trials have assessed presbyopia\u2019s impact on income.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec002\">\n<jats:title>Methods<\/jats:title>\n<jats:p>In April 2017, we conducted a census among 59 Bangladesh villages to identify persons aged 35 to 65 years with presbyopia (presenting distance vision &gt; = 6\/12 bilaterally and correctable inability to see 6\/13 at 40 cm with both eyes), who never had owned glasses. Participants were randomized (1:1) to receive immediate free reading glasses (intervention) or glasses delivered 8 months later (control). Visual demand of different jobs was stratified into three levels. Outcomes were between-group differences in the 8 month change in: self-reported monthly income (primary) and Near Vision Related Quality of Life (NVRQOL, secondary).<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec003\">\n<jats:title>Results<\/jats:title>\n<jats:p>Among 10,884 census participants, 3,655 (33.6%) met vision criteria and 863 (23.6%) comprised a sample enriched for near vision-intensive jobs, but 39 (4.52%) could not be reached. All participants allocated to intervention (n = 423, 51.3%) and control (n = 401, 48.7%) received the appropriate intervention, and follow-up was available for 93.4% and 96.8% respectively. Groups were similar at baseline in all characteristics: mean age was 47 years, 50% were male, 35% literate, and about half engaged in \"most near vision-intensive\" occupations. Glasses wear at 8-month follow-up was 88.3% and 7.81% in intervention and control respectively. At baseline, both the intervention and control groups had a self-reported median monthly income of US$35.3. At endline, the median income for the intervention group was US$47.1 compared with US$35.3 for control, a difference of 33.4%. Predictors of greater income increase in multivariate models included intervention group allocation (OR 1.45, 95% CI 1.12, 1.88, P = 0.005), male sex (OR 2.41, 95% CI 1.84, 3.16, P &lt;0.001), and not engaging in income-producing work at baseline (OR 2.35, 95% CI 1.69, 3.26, P&lt;0.001).<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec004\">\n<jats:title>Conclusion<\/jats:title>\n<jats:p>Provision of reading glasses increases income in near vision-intensive occupations, and may facilitate return to work for those currently unemployed.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0296115","type":"journal-article","created":{"date-parts":[[2024,4,3]],"date-time":"2024-04-03T17:21:47Z","timestamp":1712164907000},"page":"e0296115","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":16,"title":["The effect on income of providing near vision correction to workers in Bangladesh: The THRIVE (Tradespeople and Hand-workers Rural Initiative for a Vision-enhanced Economy) randomized controlled trial"],"prefix":"10.1371","volume":"19","author":[{"given":"Farzana","family":"Sehrin","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling","family":"Jin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kamrun","family":"Naher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Narayan Chandra","family":"Das","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ving Fan","family":"Chan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dong 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Liu","year":"2009","journal-title":"Journal of Modern Applied Statistical Methods"},{"key":"pone.0296115.ref012","unstructured":"Organization for Economic Cooperation and Development (OECD), Gender Equality in Education, Employment and Entrepreneurship: Final Report to the MCM 2012. http:\/\/www.oecd.org\/employment\/50423364.pdf. p. 17."},{"key":"pone.0296115.ref013","volume-title":"Lean impact: How to innovate for radically greater social good","author":"AM Chang","year":"2018"},{"key":"pone.0296115.ref014","unstructured":"American National Standard for Opthalmics-Opthalmic Optics-Specifications for Single-Vision Ready-to-Wear Near-Vision Spectacles, (ANSI z80.31\u20132012), 2012."},{"key":"pone.0296115.ref015","unstructured":"California State Board of Optometry, \u201cCalifornia Laws and Regulations related to the Practice of Optometry and Opticianry, 2020,\u201d Gold Rush Publishing, March 2020. https:\/\/www.optometry.ca.gov\/lawsregs\/opt2020lawsregs.pdf"},{"key":"pone.0296115.ref016","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/j.jhealeco.2015.04.004","article-title":"Health and agricultural productivity: Evidence from Zambia","volume":"42","author":"G Fink","year":"2015","journal-title":"Journal of health economics"},{"issue":"1","key":"pone.0296115.ref017","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1093\/ajcn\/36.1.68","article-title":"Worker productivity and the nutritional status of Kenyan road construction laborers","volume":"36","author":"JC Wolgemuth","year":"1982","journal-title":"The American journal of clinical nutrition"},{"issue":"6204","key":"pone.0296115.ref018","doi-asserted-by":"crossref","first-page":"1546","DOI":"10.1136\/bmj.2.6204.1546","article-title":"Iron-deficiency anaemia and its effect on worker productivity and activity patterns","volume":"2","author":"VR Edgerton","year":"1979","journal-title":"Br Med J"},{"issue":"4","key":"pone.0296115.ref019","doi-asserted-by":"crossref","first-page":"908","DOI":"10.1093\/ajcn\/59.4.908","article-title":"Functional consequences of iron supplementation in iron-deficient female cotton mill workers in Beijing, China","volume":"59","author":"R Li","year":"1994","journal-title":"The American journal of clinical nutrition"},{"issue":"4","key":"pone.0296115.ref020","doi-asserted-by":"crossref","first-page":"916","DOI":"10.1093\/ajcn\/32.4.916","article-title":"Iron deficiency anemia and the productivity of adult males in Indonesia","volume":"32","author":"SS Basta","year":"1979","journal-title":"The American Journal of Clinical Nutrition"},{"issue":"6","key":"pone.0296115.ref021","doi-asserted-by":"crossref","first-page":"449","DOI":"10.1046\/j.1365-3156.2001.00729.x","article-title":"Intestinal helminth infections, anaemia and labour productivity of female tea pluckers in Bangladesh","volume":"6","author":"D 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