[On the indications for treatment of intermittent exotropia (author's transl)].

The most decisive factors for surgical intervention in intermittent exotropia are the frequency of manifest deviation, the motor disturbancies and the degree of binocular functions present. The disturbance of binocular function may be characterised primarily by the extent to which binocular vision is convergence-dependent. We prescribe increasingly strong correcting prisms preoperatively. The aim is to attain and stabilise the divergent position of rest, to approximate the near and distant angles in cases of pseudodivergenceexcess, and to eliminate convergence-dependency of binocular vision.