Lepore F E
Department of Neurology, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Brunswick 08903.
Neurology. 1988 Feb;38(2):319-22. doi: 10.1212/wnl.38.2.319.
In 21 patients with unilateral ptosis, only 1 was found to have lid retraction of the fellow eye--a sign regarded as evidence of Hering's law of equal innervation governing levator function. Hering's law may influence levator function in select cases of ptosis due to disease at or distal to the neuromuscular junction. Alternatively, the relatively autonomous contraction of orbicularis oculi or inhibition of frontalis may mask unilateral lid retraction.
在21例单侧上睑下垂患者中，仅1例被发现对侧眼存在睑裂退缩——这一征象被视为赫林等神经支配定律（Hering's law of equal innervation）支配提上睑肌功能的证据。赫林定律可能在某些因神经肌肉接头处或其远端疾病导致的上睑下垂病例中影响提上睑肌功能。另外，眼轮匝肌相对自主的收缩或额肌的抑制可能掩盖单侧睑裂退缩。
