Baseline characteristics of 882 children with correctable refractive error by randomization groups.

<p>Values are numbers (percentages) unless stated otherwise.</p

Enrolment and progression of children through the study.

<p>Enrolment and progression of children through the study.</p

Number of children needing glasses, owning glasses at baseline, purchasing glasses prior to endline (main study outcome) and observed wearing glasses at endline (secondary outcome), by randomization group.

<p>Number of children needing glasses, owning glasses at baseline, purchasing glasses prior to endline (main study outcome) and observed wearing glasses at endline (secondary outcome), by randomization group.</p

Effect of randomization group and other potential determinants on purchase of glasses prior to endline (main study outcome) adjusting for cluster effects within school.

<p>Effect of randomization group and other potential determinants on purchase of glasses prior to endline (main study outcome) adjusting for cluster effects within school.</p