Hutcheson K A, Lambert S R
Department of Ophthalmology, University of Maryland School of Medicine, Baltimore, USA.
J AAPOS. 1998 Dec;2(6):376-7. doi: 10.1016/s1091-8531(98)90039-8.
Cyclic esotropia is a rare phenomenon in which esotropia and orthophoria alternate over a period of 48 to 96 hours. The mechanism that underlies the phenomenon is unknown. Cyclic esotropia often occurs after a fusion-disrupting event. We report an unusual case of cycling esotropia with onset after a traumatic sixth nerve palsy. The cyclic phase persisted for 2 years, following a 48-hour alternate-day pattern. After strabismus surgery for the esotropic angle, the deviation disappeared and the patient remained orthotropic, with 1 year of follow-up to date.
周期性内斜视是一种罕见现象,即内斜视和正位视在48至96小时的时间段内交替出现。该现象背后的机制尚不清楚。周期性内斜视常发生在融合功能被破坏的事件之后。我们报告一例不寻常的周期性内斜视病例,其发病于外伤性第六脑神经麻痹之后。周期阶段持续了2年,呈每隔一天48小时的模式。在对内斜视角进行斜视手术后,斜视消失,患者保持正位,至今已有1年的随访期。