Evidence gap maps

Evidence gap maps (EGMs) are a visual tool for presenting the state of evidence relevant to international development in particular thematic areas. EGMs summarise, appraise, and present evidence from systematic or literature reviews. The aim is to make the available evidence accessible in a user-friendly format and to highlight gaps for future research. For each review the maps display its summary, the strength of evidence and the methodological quality of the review.

Sightsavers is developing a number of EGMs on the topics relevant to visual impairment. To access specific thematic gap maps click on the links below.

Cataract gap map
Diabetic retinopathy gap map
Glaucoma gap map
Refractive error gap map
Trachoma gap map


How to use evidence gap maps

How evidence gap maps are developed
Eye health evidence gap map usability testingĀ [PDF]

In collaboration with: