orthoptic examination, an ophthalmoscopic examination of the binocular function of the eyes, typically performed by an orthoptist. A stereoscopic instrument presents a slightly different picture to each eye. The examiner notes the degree to which the pictures are combined by the normal process of fusion. If the person has diplopia, separate pictures are seen. If the person has suppression amblyopia, only one picture is seen. Vision training may improve binocular vision in some conditions.
