Results after Advancement of Tenotomized or Recessed Medial Rectus Muscles in Patients with Consecutive Exotropia
Steffen H., Kolling G.H.
Dept. of Ophthalmology, University of Heidelberg
Purpose: Is the advancement of a tenotomized or recessed medial rectus muscle a dosable operative procedure?
Method: Retrospective trial performed on 20 patients after tenotomie (group 1) or 20 patients after recession of the medial rectus muscle (group 2). For every 2° of deviation the medial rectus muscle was advanced for one millimeter. Distant and near angles were assessed three days and three months postoperatively as was the motility of the eyes. Simultaneous perception was present only in 2 of 40 patients.
Results: In group 1 and group 2 preoperative distant angles were XT14° and XT25° respectively. Postoperative distant angles were measured with ET 1,5° and XT1° in group 1 and group 2 respectively three days postoperatively. After three months, the angles changed to XT6° (group 1) and XT7,5° (group 2) with a standard deviation ranging from 4.7° to 5.7° in both groups. The operative effect (in ° of corrected angle/mm of operated muscle) was calculated with 2.1 in group 1 and 1.9 in group 2 respectively 3 days postoperatively. Three months postoperatively the operative effect had decreased to 1.1 and 1.4 in group 1 and group 2 respectively. Adduction improved in average by 12° and 17,5° in group 1 and group 2 respectively.
Conclusions: With an amount of operation of 2° per mm no overcorrection should be present three days postoperatively. However, three months po
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