[Results of the bimedial muscle belt]

The effectivity of a retroequatorial muscle belt operation, modification of Cüppers' Fadenoperation, is demonstrated by its results in 206 patients with excess esotropia at near and variable angle esotropia. It is shown that this procedure can reduce excess esotropia at near by a significant amount and lessen the extent of variable angle esotropia without causing incomitance in horizontal eye motility. A belt, placed bimedially on both recti muscles, showed to be twice as effective on the deviation at near as on the angle at distance. Proposing a similar mode of action, the atraumatic fixation with the muscle belt can facilitate reoperations in comparison with the Fadenoperation. Damage to the muscle is limited to a minimum.