The purpose of this study was to evaluate the effect of improved control with part-time occlusion treatment on the final postoperative surgical outcome in patients with intermittent exotropia. Eighty-nine patients were recruited who had unilateral lateral rectus recess / reset procedures for basic type exotropia and with >50% compliance with preoperative part-time occlusion and postoperative follow-up of >1 year. Patients were aged 3.52±2.35 years; 40 males and 49 females; 87.6% had patching of the fixing eye and the remainder with alternate eye occlusion. Mean duration of occlusion was 11.43 months. The mean deviation before occlusion was 27.61±5.40PD for distance and 29.82±5.28PD for near. After occlusion and pre-surgery, it was 26.17±5.09PD for distance and 27.26±5.56PD for near. Forty-nine patients showed an improved control grade. A successful surgical outcome was achieved for 77.6% in the improved control group versus 50% in the no improvement control group. The authors conclude improvement of control grade preoperatively may lead to better surgical success rates.

Surgical outcome of intermittent exotropia with improvement in control grade subsequent to part-time preoperative occlusion treatment.
Bang SP, Lee DC, Lee SY.
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Fiona Rowe (Prof)

Institute of Population Health, University of Liverpool, UK.

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