Prevention of diseases Children diseases    Strabismus   Amblyopia   Refractive anomalies   Learning problems   Retrolental       fibroplasia   Eye accidents   Recommendations Adult diseases	Learning problems When children have learning difficulties it is imperative that the eye sight is optimal and that spectacles are used, when indicated. There is a however no proved correlation between visual problems and learning difficulties. The latter occur in 3 to 5% of the schoolpopulation and constitute usually a complex problem with multifactorial etiologies. Recent studies have proved that dyslexia and the corresponding learning problems are caused by genetic biochemical and/or structural modifications of the brain.