Ａ型外斜、分离性垂直偏斜（ＤＶＤ）及上斜肌功能亢进三者并存，称为Ｈｅｌｖｅｓｔｏｎ综合征。是Ｈｅｌｖｅ－ｓｔｏｎ在１９６９年首次提出［１］，在临床上少见，国内文献仅有数例数报道［２］。我科收治３例，经手术治疗，效果良好，报道如下。１资料与方法三棱镜加... Type A external oblique, vertical deviation of separation (DVD) and upper oblique muscle hyperthyroidism three co-exist, known as Helveston syndrome. Helve-ston was first proposed in 1969 [1], is clinically rare, only a few cases reported in the domestic literature [2]. Our department received 3 cases, after surgery, the effect is good, reported as follows. 1 Materials and Methods Prism plus ...