Surgery for intermittent exotropia

How effective is surgery for intermittent exotropia? The authors of one study noted that 62% of intermittent exotropia surgery patients achieved only a fair or poor outcome and that 60% of the patients required at least one re-operation."

See: Pineles SL, Ela-Dalman N, Zvansky AG, Yu F, Rosenbaum AL.Long-term results of the surgical management of intermittent exotropia. J AAPOS. 2010 Aug;14(4):298-304