Stopped: USAID stopped funding the study in March of 2025 because USAID was dismantled and stopped funding all research programs.
The main objective of the Sierra Leone Sees to Learn (SL2) trial is to assess the educational impact of providing free eyeglasses to students aged 9-20 years with uncorrected refractive error in Sierra Leone. The procedures include baseline questionnaires and educational assessments to collect data on students and schools, and then the provision of free eyeglasses to students who have uncorrected (or undercorrected) refractive error (URE). The questionnaires and student assessments will take 1-2 hours. The duration of the study timeframe is one school year. The end-line questionnaires and student assessments will be administered at the end of the school year.
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Foundational mathematic and literacy skills
Timeframe: Month 1 and 9 months after glasses are provided
Anxiety
Timeframe: Month 1 and 9 months after glasses are provided
Prosocial
Timeframe: Month 1 and 9 months after glasses are provided
Social and emotional problems
Timeframe: Month 1 and 9 months after glasses are provided