[Variations of postoperative ocular alignment in patients submitted to strabismus surgery].

Purpose: To determine the drift variations of the postoperative alignment in patients who underwent strabismus surgery and to identify possible risk factors associated with such occurrence.

Patients And Methods: We reviewed the variations in postoperative alignment drift of 819 patients who underwent rectus muscle surgery from January, 1995 to December, 2005 at the Hospital de Clínicas da Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo. The patients were divided into four groups according to the type of deviation (alternating esotropia, monocular esotropia, alternating exotropia and monocular exotropia).