Tests for detecting strabismus in children age 1 to 6 years in the community

This is the protocol for a review and there is no abstract. The objectives are as follows: To assess and compare the accuracy of tests, alone or in combination, for screening for strabismus in children aged one to six years, in a community setting by lay screeners or primary care professionals. Other objectives will be to investigate sources of heterogeneity of diagnostic accuracy, including: age; setting; type of professionals performing the test; study design; study size (< 100 vs. ≥ 100 participants, which may reflect the adoption of different sampling strategies); variation in the way a test is carried out; type of strabismus (convergent vs. divergent, horizontal/vertical); severity of strabismus (amount of misalignment, constant/intermittent/latent);