Hultman O, et al. - In order to ascertain strabismus prevalence among Danish adults, interview of 3785 adults in the Danish Rural Eye Study regarding eye health, visual acuity measurement, Hirschberg test and retinal photography was done. The frequency of strabismus history and strabismus surgery as well as the prevalence of strabismus-associated amblyopia among participants with strabismus were determined. The results were then related to the current national vision screening programme. Strabismus was noted to be prevalent in 1.1% (41/3785). Prevalence did not differ in relation to gender or screening status. In this first European population-based study on this topic, the prevalence outcomes were in line with three out of five previous studies using cover test. A possible underestimation of the true prevalence is expected when using Hirschberg test. For the first time, a predominance of esotropia among Caucasian Scandinavian adults, is revealed.