Zubcov A A, Reinecke R D, Calhoun J H
Foerderer Eye Movement Center for Children, Wills Eye Hospital, Philadelphia, PA 19107.
J Pediatr Ophthalmol Strabismus. 1990 Mar-Apr;27(2):59-64; discussion 65. doi: 10.3928/0191-3913-19900301-03.
Four patients with dissociated horizontal deviation (DHD) are described and an explanation of their horizontal comitant deviations is offered. The patients had asymmetric comitant horizontal deviations dependent on the fixing eye. All of them had unequal visual acuity (VA) and asymmetric manifest latent nystagmus (MLN) documented with eye movement recordings. The subjects appear to use convergence to reduce their nystagmus when viewing with the eye having more severe nystagmus and hence poorer vision. When patients viewed with the eye having less nystagmus, little or no convergence was exhibited. We suggest that DHD may be the manifestation of an asymmetric nystagmus blockage syndrome (NBS). The dampening effect of convergence on nystagmus has been well documented in the past and seems to apply here. The patients demonstrate that a true, but asymmetric NBS, can be found with MLN.
本文描述了4例分离性水平偏斜（DHD）患者，并对其水平共转性偏斜做出了解释。这些患者存在与注视眼相关的不对称性共转性水平偏斜。他们均有视力（VA）不等以及通过眼动记录证实的不对称性显性潜伏性眼球震颤（MLN）。当用眼球震颤更严重因而视力更差的眼睛注视时，受试者似乎会利用集合来减少眼球震颤。当患者用眼球震颤较少的眼睛注视时，则很少或没有表现出集合。我们认为DHD可能是非对称性眼球震颤阻滞综合征（NBS）的一种表现形式。过去已经充分证明了集合对眼球震颤的抑制作用，在此似乎也适用。这些患者表明，MLN可出现真正的但不对称的NBS。
