Study design
BLIND
A non-randomised intervention comparative study was conducted to determine the performances of an integrated (IM) and vertical (VM) school eye health programme. The school eye screening programme was implemented in 19 schools from April 2017 to October 2017 in Unguja (North A and South District) and Pemba Island (Micheweni and Mkoani District). Before the study began, permission to conduct the screening and research was obtained from the Ministry of Education and Vocational Training and school principals. Parental consent and children’s assent were obtained before the children participated in the screening. Informed consent was obtained from key informants before participating in the semistructured interviews. We reported our findings according to the Standards for Reporting Implementation Studies statements. It was impossible to blind the school authorities and investigators to the intervention (IM or VM); they were blinded to the study’s hypothesis.