Clinical characteristics of strabismic children.

LE, RE, left eye, right eye. The deviation of the eyes was assessed with cover-uncover test and prism; the binocular vision was evaluated with the TNO test for stereoscopic depth discrimination. X-XT  =  intermittent exotropia measured at far distance (5 m); X′-X′T  =  intermittent exotropia measured at near distance (30 cm); E-ET  =  accommodative esotropia measured at far distance (5 m); E′-E′T  =  accommodative esotropia measured at near distance (30 cm); E′T and ET, esotropia measured at near (30 cm) and at far (5 m) distance, respectively; H′TD and HTD, hypertropia of right eye measured at near (30 cm) and at far (5 m) distance, respectively.