Felius J, Langerhorst C T, van den Berg T J, Greve E L
Eye Clinic, University of Amsterdam, The Netherlands.
Int Ophthalmol. 1992 Sep;16(4-5):221-6. doi: 10.1007/BF00917965.
To calibrate oculokinetic perimetry (OKP) as developed by Damato in terms of conventional perimetric threshold values, 33 eyes with either glaucoma or ocular hypertension were tested with a standard Humphrey Field Analyzer using the Central 30-2 test and twice with a 26-point OKP chart. The frequency of seeing of the OKP test spot was plotted against 30-2 thresholds. This showed a weak relation between the two tests. Subsequently eyes that were considered to have had poor fixation were omitted, but false positive and false negative results still occurred in 19 remaining eyes. To check whether Troxler's effect (local adaptation) might have caused false positives, 6 subjects were tested with OKP, controlling the fixation times. Increasing the fixation time from 'very short' to 2 and 5 seconds yielded more 'not seen' responses in OKP. False negative data were found to occur preferentially in border areas of visual defects. The average frequency of seeing curve over all data showed a 50% frequency of seeing for the OKP stimulus at a 14.6 dB equivalent conventional threshold value. The spreading of the curve was 7 dB (95% confidence interval 28 dB).
为了根据传统视野阈值校准达马托开发的眼动视野计（OKP），使用标准汉弗莱视野分析仪对33只患有青光眼或高眼压症的眼睛进行了中央30-2测试，并使用26点OKP图表进行了两次测试。将OKP测试点的可见频率与30-2阈值进行绘图。结果显示这两种测试之间存在微弱的关系。随后，剔除了那些被认为注视不佳的眼睛，但在剩下的19只眼中仍出现了假阳性和假阴性结果。为了检查特罗克斯勒效应（局部适应）是否可能导致假阳性，对6名受试者进行了OKP测试，并控制了注视时间。将注视时间从“非常短”增加到2秒和5秒，OKP中出现了更多“未看见”的反应。发现假阴性数据优先出现在视觉缺陷的边缘区域。所有数据的平均可见频率曲线显示，在相当于14.6 dB的传统阈值时，OKP刺激的可见频率为50%。曲线的离散度为7 dB（95%置信区间28 dB）。
