Incidence of strabismus surgery after vitreoretinal surgery

Strabismus following other intraocular surgery has several well-described etiologies. Vitreoretinal surgeries are the most likely to require retrobulbar anesthesia and exoplants, two commonly associated risk factors for postoperative strabismus. A reliable assessment of the incidence of strabismus secondary to other ocular surgery has not been established. We report a large cohort of vitreoretinal surgery cases performed in the same multispecialty practice with the area's only adult strabismus surgeon. We specifically examined strabismus surgery as the inclusion criteria, because nonsurgical management of postoperative strabismus typically indicates more benign and less-complex presentations. We found 7 cases of strabismus surgery following 4,176 retina surgeries (0.17%), one of which had a prior history of strabismus surgery. Of the 6 others, 2 had a scleral buckle placed, and a further 2 had a course consistent with a typical block infiltration strabismus.