Despite the simultaneous formation of multiple retinal images, the Array MIOL allowed good binocular vision including random-dot stereopsis. Functional aniseikonia developed but did not interfere with normal binocular vision.

We present a case of persisting diplopia after bilateral laser in situ keratomileusis in a patient with high anisometropia and amblyopia. Treatment of this complication by ocular-muscle surgery was not possible because of missing fusion. We suggest that, especially in cases with anisometropia, a complete examination of binocularity be performed before refractive surgery.

The basic finger test of the subjective level of the Fly's wings gives a quite reasonable approximation of local stereoscopic depth perception. In terms of practical investigation the finger test shows in convincing manner whether the individual stereoscopic ability is based on normal, subnormal or anomalous binocular interaction.

Twenty-six patients with small-angle constant or intermittent exotropia of up to 7 degrees, and eight patients with small-angle exophoria of the convergence-insufficiency type, underwent unilateral medial rectus resection. Of the 34 patients, 9 were cured, 19 improved and in 6 surgery failed or there was early recurrence. Improvement occurred usually in patients who had basic microexotropia and in some who had homonymous abnormal retinal correspondence, a factor which limited the sensory results. The sensory, motor, and mechanical factors influencing the procedure are discussed in detail. The resection technique employed is reviewed, demonstrating the advantage of well-controlled results. This paper shows that resecting the medial recti is useful, not only in convergence insufficiency, but also in related small-angle exodeviations, for which a classification is proposed.

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