1. Smartphone-based screening for visual impairment in Kenyan school children: a cluster randomised controlled trial 
Hillary K Rono, MMed, Andrew Bastawrous, PhD, David Macleod, PhD, Emmanuel Wanjala, MMed, Gian Luca Di Tanna, PhD, Prof Helen A Weiss, PhD, Prof Matthew J Burton, PhD 
The Lancet Global Health 
Volume 6, Issue 8, Pages e924-e932 (August 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 Vision screening methods used in school children
(A) Standard screening with a Tumbling-E card. (B) Peek Acuity screening app used on a smartphone. (C) Peek referral card showing the vision of the child and the referral instructions. (D) Parent receiving an SMS message with instructions after screening. SMS=short message service.
The Lancet Global Health 2018 6, e924-e932DOI: ( /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
Location of primary schools in each study group in Trans Nzoia County, in relation to Kitale hospital, Kenya
The Lancet Global Health 2018 6, e924-e932DOI: ( /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

4. Figure 3
Trial profile
The Lancet Global Health 2018 6, e924-e932DOI: ( /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

5. Figure 4
Kaplan-Meier analysis of time from screening to attendance at the hospital ophthalmology clinic
SMS=short message service.
The Lancet Global Health 2018 6, e924-e932DOI: ( /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