Clinical characteristic of the three groups of children examined (dyslexic, D 10–12; non dyslexic children reading age matched, ND 7–9; and non dyslexic children chronological age matched, ND 10–12).

Mean values of: binocular vision (Stereoacuity test, TNO measured in seconds of arc; near point of convergence, NPC measured in cm; Heterophoria at near distance measured in prism diopters; Exo = exophoria; Vergence fusional amplitudes (divergence and convergence) at near distance measured in prism diopters. Asterisks indicate that value is significantly different with respect to the group of dyslexic children (p≤0.01).