Scientific evidence and recommendations on vision screening

Background: There is controversy on when and in who recomend visual screening, the aim of this paper is to assessthe level of evidence on the topic and compare it with current recommendations. Methods: Sistematic review of scientific papers searching in Medline and Cochrane Library Plus, without date limit and only papers in English and Spanish. Grey literature accesed through manual search, no restrictions were made by study design. Results: There is agreat variability in recommendations ranging from very restrictive to very lax. The vast majority were through clinical practice guidelines or opinion papers .The scientific paper identified, 2 were RCT, 3 non controlled trials, and one cross-sectional. Conclusions: Professional associations should use scientific arguments instead of corporative ones. The studies on adults don’t allow to determine if the recommendation made by associations are evidence based. In the case of children, the studies and the recommendations give no information on what is the ideal age to perform the screening(AU)