%0 Generic %A Yu, Jun %A Cen, Jie %A Zhao, Peiquan %A Kang, Xiaoli %D 2019 %T Evaluation of three superior oblique surgical weakening procedures for A-pattern strabismus %U https://scielo.figshare.com/articles/dataset/Evaluation_of_three_superior_oblique_surgical_weakening_procedures_for_A-pattern_strabismus/9796124 %R 10.6084/m9.figshare.9796124.v1 %2 https://scielo.figshare.com/ndownloader/files/17577626 %2 https://scielo.figshare.com/ndownloader/files/17577629 %2 https://scielo.figshare.com/ndownloader/files/17577635 %2 https://scielo.figshare.com/ndownloader/files/17577644 %2 https://scielo.figshare.com/ndownloader/files/17577650 %K Strabismus/surgery %K Oculomotor muscles/physiopathology %K Ophthalmologic surgical procedures/methods %X

ABSTRACT Purpose: To evaluate three superior oblique surgical weakening procedures for correcting A-pattern strabismus: tenectomy, superior oblique hang-back recession, and that involving the use of superior oblique suture spacers. Methods: The inclusion criteria were A-pattern strabismus ≥10Δ and horizontal deviation ≥10Δ, with no other ocular abnormality and a follow-up period of ≥6 months. The 24 patients (mean age, 16.3 ± 8.1 years; mean postoperative follow-up, 9.63 ± 3.11 months) were randomly divided into three groups of 8 patients each. Sigmascan® Pro 5.0 software was used to measure the degree of torsion pre- and postoperatively. Results: Preoperatively, the mean angles of A-pattern deviation were 19.33Δ° ± 3.53Δ° (tenectomy group), 15.71Δ° ± 1.11Δ° (hang-back recession group), and 14.62Δ° ± 1.18Δ° (suture spacers group); these values did not differ significantly. At the final follow-up examination, the mean angles of A-pattern deviation were 4.67Δ° ± 0.67Δ° (tenectomy group), 6.29Δ° ± 1.48Δ° (hang-back recession group), and 4.38Δ° ± 1.03Δ° (suture spacers group), with no statistically significant difference in the correction in A-pattern strabismus among the three groups. Preoperatively, the mean torsional angles were +5.4° ± 3.9° (tenectomy group), +5.6° ± 4.9° (hang-back recession group), and +6.0° ± 3.3° (suture spacers group); these values did not differ significantly. At the final follow-up examination, the mean torsional angles were + 0.3° ± 5.6° (tenectomy group), +0.5° ± 4.6° (hang-back recession group), and +0.2° ± 5.2° (suture spacers group), with no statistically significant difference in the intorsion correction among the three groups. Conclusion: All three superior oblique weakening procedures were effective for correcting A-pattern strabismus and fundus intorsion.

%I SciELO journals