Schmidt D, Mattheus S
Klin Monbl Augenheilkd. 1975 Dec;167(6):835-40.
3 cases of cyclical convergent strabismus (48 hour rhythm) were investigated. In contrast to intermittant strabismus, cyclical strabismus is not fatigue dependant. An alteration in the rhythm of the cyclical esotropia was produced by wearing prisms, red glasses or occlusion for several days. This observation indicates that centrally inaugurated rhythm processes can be altered by peripheral sensory influcences. In the case of our third patient, who was not operated upon, there was a cyclical strabismus which persisted from the age of 4 to 19 years, before changing to a constant convergent strabismus. The other two patients, following strabismus surgery, had a small angle esophoria with good fusion and stereopsis.
对3例周期性集合性斜视（48小时节律）进行了研究。与间歇性斜视不同，周期性斜视不依赖于疲劳。通过佩戴棱镜、红色眼镜或遮盖数天，可使周期性内斜视的节律发生改变。这一观察结果表明，中枢启动的节律过程可被外周感觉影响所改变。在我们的第三例未接受手术的患者中，存在从4岁持续至19岁的周期性斜视，之后转变为恒定性集合性斜视。另外两名患者在斜视手术后，有小角度隐斜，融合和立体视良好。
