Effect of combining oblique muscle weakening procedures with bimedial rectus recessions on the surgical correction of XXXX .

@entity1 @entity5971
PURPOSE: To evaluate the effects of oblique muscle weakening when combined with medial rectus muscle recession on the primary position horizontal alignment after surgery to correct @entity5971 . METHODS: The medical records of @entity1 who underwent bilateral medial rectus recessions with or without simultaneous oblique muscle surgery between 2004 and 2013 at two Brazilian hospitals were retrospectively reviewed. @entity1 who had undergone previous strabismus surgery and those with incomplete data were excluded. The amount of correction for every millimeter of medial rectus recession was analyzed for @entity1 undergoing an isolated procedure (group A), those undergoing additional inferior oblique muscle weakening (group B), and those undergoing additional superior oblique muscle weakening, or tenectomy (group C). RESULTS: A total of 160 @entity1 (71 females) met inclusion criteria. The magnitudes of preoperative @entity5971 and the times of postoperative evaluation did not differ between groups. The amounts of correction did not differ when @entity1 younger and older than 7 years were compared in every group. The amounts of correction for every millimeter of medial rectus recession were 3.0(  ) in group A, 3.1(  ) in group B, and 2.6(  ) in group C. The reduction for group C was significant (P = 0.0036). CONCLUSIONS: Pateints undergoing superior oblique weakening surgery in combination with bimedial rectus recessions may require larger medial rectus recessions to correct the primary position esodeviation. The authors suggest that a 10%-15% increase of the planned recession should be considered.
