Further evidence that DVD serves to damp or block latent nystagmus

被引：0

作者：

Guyton, DL ^{[1
]}

Zee, DS ^{[1
]}

机构：

[1] Johns Hopkins Univ Hosp, Wilmer Eye Inst, Baltimore, MD 21287 USA

来源：

TRANSACTIONS: 27TH MEETING OF THE EUROPEAN STRABISMOLOGICAL ASSOCIATION | 2001年

关键词：

dissociated vertical deviation; latent nystagmus; nystagmus blockage; eye movement;

D O I：

暂无

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Scleral search coil eye movement recordings of nine patients with dissociated vertical deviation (DVD) were examined to determine the relationship between DVD and latent nystagmus. In all patients recorded, latent nystagmus always appeared or increased in intensity when one eye was occluded, and became damped as the DVD developed. The damping occurred over 0.3 to 3 seconds and was often only partial, identified as a decreasing slope of the slow phase of the nystagmus. Occasionally, if the DVD response diminished, the latent nystagmus reappeared. A DVD response could be recorded in total darkness in those individuals who could voluntarily imagine switching "fixation" (attention) from one eye to the other. This evidence supports the view that DVD is a learned, anticipatory, vergence response, occurring upon taking up unilateral fixation, serving to damp or block latent nystagmus.

引用

页码：101 / 104

页数：4