Friedburg D, Meyer I
Klin Monbl Augenheilkd. 1978 Jul;173(1):80-4.
In free space a random-dot-stereogramme for the determination of the extent of cyclofusion is used with the help of a haploscope. In the normal person orthophoria with regard to rolling to within +/- 1 degrees is found not only in the primary position but also in the secondary and tertiary positions and with head tilt. From the fact that with circular rotation of both eye images against each other pseudostereoscopic effects occur, it is deduced that the cyclofusion seen here occurred sensorially. The testing of the area of cyclofusion gives a very good basis for determining the indication for operation on the superior oblique muscle. It is shown with examples that simply tucking this muscle when old trochlear nerve paresis is present without provable excyclotropia is not favorable. Instead one must tuck the muscle asymmetrically in such cases--the fold should be markedly smaller at the anterior border of the muscle which acts more as a rotator, than at the posterior border.
在自由空间中，借助于双眼单视镜使用用于确定旋转融合范围的随机点立体图。在正常人中，不仅在第一眼位，而且在第二眼位、第三眼位以及头部倾斜时，相对于旋转的正视眼范围在±1度以内。从双眼图像彼此作圆周旋转时会出现假立体视觉效应这一事实可以推断，此处所见的旋转融合是感觉性的。对旋转融合区域的检测为确定上斜肌手术指征提供了很好的依据。举例说明，当存在陈旧性滑车神经麻痹且无明显外旋转斜视时，单纯折叠该肌肉是不可取的。相反，在这种情况下必须不对称地折叠肌肉——在起旋转作用更强的肌肉前缘的折叠应明显小于后缘的折叠。
