Mutlukan E, Damato B E, Tavadia S M
Tennent Institute of Ophthalmology, University of Glasgow, UK.
Eye (Lond). 1993;7 ( Pt 1):131-3. doi: 10.1038/eye.1993.27.
The multifixation campimeter has a central test stimulus and a series of numbered fixation targets and uses the patient's eye movements to position the stimulus in the visual field. The stimulus is constantly exposed so that the patient reads the numbers and identifies any which are associated with its disappearance. The aim of this study is to identify the effect of clustering fixation targets on sensitivity. Two hundred and seventy-two eyes of 139 normal individuals were tested with a multifixation campimeter in which either one or two of the fixation targets corresponded to the physiological blind spot. Sixty-nine individuals (138 eyes) were tested with chart A and 70 individuals (134 eyes) with chart B. The second fixation target increased the blind spot detection rate from 65% to 85% of the eyes respectively. In 10% of eyes the blind spot was detected on only one of two examinations. The performance of multifixation campimetry is improved if fixation targets are clustered in vulnerable parts of the field and distributed so as to test the blind spot repeatedly during the examination. Inconsistent results are an indication for re-examination of selected points, with intermittent stimulus presentation.
多功能注视视野计有一个中央测试刺激物和一系列编号的注视目标，并利用患者的眼球运动将刺激物定位在视野中。刺激物持续呈现，以便患者读出数字并识别任何与刺激物消失相关的数字。本研究的目的是确定聚集注视目标对敏感度的影响。对139名正常个体的272只眼睛进行了多功能注视视野计测试，其中一个或两个注视目标对应生理盲点。69名个体（138只眼睛）用图表A测试，70名个体（134只眼睛）用图表B测试。第二个注视目标分别将盲点检测率从65%提高到了85%。在10%的眼睛中，仅在两次检查中的一次检测到了盲点。如果注视目标聚集在视野的易损部位并进行分布，以便在检查期间反复测试盲点，多功能注视视野计的性能会得到改善。结果不一致表明需要用间歇性刺激呈现对选定的点进行重新检查。
