Incidence of inadvertent perforation in strabismus surgery

We conducted a prospective study for over 2 years to determine the incidence of perforations following strabismus surgery. All eyes were examined by indirect ophthalmoscopy and indentation immediately after surgery in an attempt to identify perforation sites. No cryotherapy or treatment was done. None of the 10 perforations identified was associated with retinal detachment or endophthalmitis. The incidence of perforations was 2.8% on a per-case basis and under 1% on a per-muscle basis.