[Consecutive exotropia as a result of esotropia surgery].

PURPOSE: To find out the probable reasons of the postoperative consecutive exotropy.

MATERIAL AND

METHODS

We studied 22 patients aged more than 14 years, operated due to esotropia during the first 7 years of life. Two categories were formed: the first contained the patients in the age between 14 and 18, and the second one the patients 19 years old and older. The period between the first and the second procedure was not shorter than seven years. The reoperations were performed due to exotropia in 15 cases. The following examinations were performed before the surgery: visual acuity, squint angle, eye movements, convergention, binocularity by Sobański, Bagolini, TNO, Worth, Titmus tests and with synoptofor.

RESULTS

We found out the probable reasons of the postoperative exotropia: incorrect, unconservative surgery, high hypermetropia, primary vertical deviation, amblyopia, absence of binocularity, simultaneous surgery for 3 or 4 muscles, too extensive surgery and irregular treatment.