1. Effect of providing near glasses on productivity among rural Indian tea workers with presbyopia (PROSPER): a randomised trial 
Priya Adhisesha Reddy, MBA, Prof Nathan Congdon, MD, Graeme MacKenzie, DPhil, Parikshit Gogate, FRCS (Edin), Qing Wen, PhD, Catherine Jan, BOptom (Hon), Prof Mike Clarke, DPhil, Jordan Kassalow, OD, Ella Gudwin, MA, Prof Ciaran O'Neill, PhD, Ling Jin, MS, Jianjun Tang, PhD, Prof Ken Bassett, MD, David H Cherwek, MD, Rahul Ali, MBBS 
The Lancet Global Health 
Volume 6, Issue 9, Pages e1019-e1027 (September 2018)
DOI: /S X(18)
Copyright © 2018 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license Terms and Conditions

2. Figure 1
Trial profile
*12 participants had both refractive error and other conditions. For details of stratification by age, sex, and productivity, see the appendix.
The Lancet Global Health 2018 6, e1019-e1027DOI: ( /S X(18) )
Copyright © 2018 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license Terms and Conditions

3. Figure 2
Observed compliance with wearing of glasses (intervention group only) and percentage gain in productivity in the intervention and control groups during the evaluation period, stratified by age
Error bars indicate 2 SD. Shaded area shows compliance.
The Lancet Global Health 2018 6, e1019-e1027DOI: ( /S X(18) )
Copyright © 2018 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license Terms and Conditions