Abadi R V, Whittle J
Department of Optometry and Vision Sciences, University of Manchester Institute of Science and Technology, England.
Arch Ophthalmol. 1991 Feb;109(2):216-20. doi: 10.1001/archopht.1991.01080020062044.
We investigated the factors that determine the nature and extent of abnormal head postures in patients with congenital nystagmus. The head positions and eye movements of 16 patients were monitored while they adopted a variety of gaze positions. Five patients displayed a single head posture and four displayed multiple head postures. Six of the nine head postures matched the minimum intensity zone. The extent of the head posture was also found to be dictated by the velocity distribution of the slow phase, the nystagmus beat direction, and the neutral zone. Our results suggest that the surgical management of a head posture should not always be based only on the relocation of the minimum intensity zone to the primary gaze position.
我们研究了决定先天性眼球震颤患者异常头位的性质和程度的因素。在16例患者采取各种注视位时，对其头部位置和眼球运动进行了监测。5例患者表现为单一头位，4例表现为多头位。9种头位中的6种与最小强度区相匹配。还发现头位的程度由慢相速度分布、眼球震颤跳动方向和中和带决定。我们的结果表明，头位的手术治疗不应总是仅基于将最小强度区重新定位到第一眼位。
