The study was done on 30 patients: 86.7% male, 13.3% female; The range of ages from 11 - 52; The causes: 46.7% from traffic accidents, 16.7% from living accidents, 19.9% from diseases related to muscles and 16.7% idiopathic; Characters of strabismus: 73.4% transvern strabismus and 26.6% combine strabismus; The time for strabismus exsis: 56.7% < 2 years, 19.9% from 2 - 5 years and 23.4% > 5 years.