NOTE: This article is more than five years old, but may still be relevant. For more recent content, see our news and blogs page.
They were originally pioneered by the International Initiative for Impact Evaluation (3ie), and for the past two years Sightsavers has been building on this and creating evidence gap maps for eye health.
There are three Sightsavers gap maps available so far, on cataract, diabetic retinopathy and refractive error. Over the next few months we will add gap maps that focus on glaucoma and trachoma.
Here’s a Sightsavers gap map:
In the cataract gap map above, a total of 52 reviews were included, presenting evidence relevant to low- and middle-income countries. Most of these were in English, three were in Chinese, two were in German and two were in Spanish. Most reviews (20) addressed quality of clinical care, followed by surgical methods for cataract (18). Of the remainder, nine looked at risk factors/prevention, five were economic evaluations, and three each addressed the burden of the disease and the accessibility of cataract services.
In response to their research questions, 30 reviews provided strong evidence, 14 reviews showed weak or no evidence; and in 14 reviews the results were inconclusive.
The reviews were assessed for quality: 14 reviews were of high methodological quality; 12 were medium quality; and 26 reviews were graded as low quality. For explanation of the strength of evidence and methodological grading please visit the guide and overview page.
As well as showing programme managers and clinicians where rigorous evidence on eye health exists, our maps can also be used to detect under-researched areas and focus future priorities. As a researcher, I’m interested to know which areas have less high-quality evidence as it will help me decide where to focus in the future.
Policymakers and clinicians can find answers to their most pressing eye health questions when they are designing projects and new initiatives. They’ll be able to see what the most up-to-date research is and draw conclusions about which approach might be most suitable for their purposes.
The eye health gap maps were developed by a multidisciplinary team from Sightsavers, the International Centre for Eye Health at the London School of Hygiene and Tropical Medicine, and the Cochrane Eyes and Vision Group. Our development process, insights and observations are unique for two reasons: this is the first time the evidence gap maps have been applied in the area of eye heath; and the development of the map was led by an international NGO with contributions from academic institutions, which provided opportunities to integrate academic and practitioners’ perspectives.
See the gap maps: View and share the link to the gap maps with your contacts – we’ll keep you posted on how they are being used by a different range of audiences.
By Bhavisha Virendrakumar, Sightsavers’ Research Officer, Evidence Synthesis
Sightsavers’ Boubacar Morou Dicko shares the obstacles Mali faced on the road to eliminating trachoma, and how the country was able to overcome them.
In 2018, Sightsavers CEO Caroline Harper took to the TED stage to talk about the importance of eliminating trachoma. Since then, 14 million people have been protected from the disease, but further progress hangs in the balance.
Sightsavers’ Edwin Maleko shares the impact of an inclusive eye health programme on communities and eye care services in Singida and Morogoro.