Effect of posterior fixation sutures on the accommodative element of partially accommodative strabismus.

In a prospective study, we investigated the effect of posterior fixation sutures on the accommodative element of partially accommodative strabismus. Twenty patients were included in the study. Recession of one or both medial rectus muscles combined with bilateral posterior fixation sutures was performed on each patient. The results showed that this combined operation had a greater effect on the angle without glasses at both distance and near fixation, but not enough to eliminate the angle without glasses in all the cases. The results in patients with convergence excess are not satisfactory, as far as the reduction of the angle without glasses is concerned. In patients without convergence excess, this operation is effective in satisfactorily reducing the squint without glasses when the difference of the angle with and without glasses does not exceed 15 delta.