Association Between Vision Impairment And Traffic Safety Outcomes In Low And Middle-Income Countries: Protocol For A Systematic Review
Abstract Background: Road traffic injuries are a major public health concern. The burden and road traffic fatality rate are especially high in low-and middle-income countries and the socioeconomic impact is profound. Although many authors have studied the correlation between vision and traffic safety, there is no robust evidence base that could be used in advocacy. This systematic review will test the hypothesis that interventions to improve vision function are associated with good traffic safety outcomes.Methods: Cochrane guidance on conducting a systematic review and Preferred Reporting Items for Systematic Review and Meta-Analysis - Protocols (PRISMA-P) were used to inform the preparation of this protocol and the Cochrane guidance and the main PRISMA guidance will inform the conduct and reporting of the review. We will search MEDLINE (Ovid), EMBASE (Ovid), PsycINFO (Ovid), CINAHL (EBSCO host), Web of Science, Cochrane Database of Systematic Reviews (CDSR) and The Cochrane Central Register of Controlled Trials (CENTRAL) in the Cochrane Library. We will include studies of any design which either attempt to access traffic safety outcomes of any kind among persons with any vision deficit or examine vision among persons who use roads. The primary outcome for this review is any measure of traffic safety or surrogate outcomes. Study selection, data extraction and evaluation of risk of bias will be done by two reviewers. A meta-analysis or narrative data synthesis will be conducted, depending on study quality and homogeneity.Discussion: The results of this review will include summary estimates of vision and the effects of interventions to improve vision function, that are associated with traffic safety outcomes in LMICs. This systematic review will fill a gap in the evidence base with policy implications that will be useful for a wide audience and may improve vision of the drivers in LMICs, leading to better traffic safety outcomes.