[Changes in the horizontal angle in strabismus after surgery of the vertical ocular muscles].

We have operated 79 children with vertical strabismus. We have treated 52 children with primary overaction of the inferior oblique muscles and 27 of them with DVD and primary overaction of the inferior oblique muscles. In all of them, we have done recession of the inferior oblique muscles (for 4, 6, 8 or 10 mm). In only seven of them, from the second group, we did recession of the superior recti (for 7, 8 or 9 mm) simultaneously. This surgery very significantly and adequately ameliorate vertical strabismus (p = 0.004). Mentioned surgery on vertical extraocular muscles theoretically may product more esodeviation. In our practice with 79 operated children we didn't prove that (p = 0.148).