周期性外斜视是比较少见的病例 ,我们将治疗的1例报告如下。患者男性 ,5岁 ,生后两个月发现正位与外斜视无规律交替出现 ,3岁时无诱因情况下外斜视发生渐频繁。 2 0 0 1年 2月 2 0日就诊 ,诊断 :共同性外斜视 ,随后连日观察 ,发现外斜视有周期变化 ,周期为 4 8小时。视力 :右眼 Recurrent exotropia is a rare case, we will treat one case reported as follows. Male patients, 5 years old, two months after birth, found that there is irregular and exotropia irregular alternation, 3-year-old without exacerbation of exotropia occurs more frequently. February 20, 2001 treatment, diagnosis: common exotropia, followed by days of observation and found that there are periodic changes in exotropia, the cycle was 48 hours. Eyesight: right eye