Humphrey 850 动力学视野计评估的准确性：一项探索性比较研究。
Accuracy of kinetic perimetry assessment with the Humphrey 850; an exploratory comparative study.
机构信息
Department of Health Services Research, University of Liverpool, Liverpool, L69 3GB, UK.
Department of Ophthalmology, Aintree University Hospital NHS Foundation Trust, Liverpool, L7 9AL, UK.
出版信息
Eye (Lond). 2019 Dec;33(12):1952-1960. doi: 10.1038/s41433-019-0520-1. Epub 2019 Jul 22.
AIM
To compare kinetic perimetry on the Humphrey 850 and Octopus 900 perimeters for assessment of visual fields, uniocular rotations and fields of binocular single vision.
METHODS
Prospective cross section study comparing Humphrey 850 kinetic perimetry to kinetic perimetry using the Octopus 900. Results were compared for both perimeters for the measurement of visual field boundaries, uniocular rotations and fields of binocular single vision in subjects with normal visual function, with comparisons of mean vector extremity values and duration of testing. A visual field boundary overlay was used to assess detection potential of Humphrey 850 kinetic perimetry using I4e and I2e targets in results of known abnormal visual fields.
RESULTS
Fifteen subjects (30 eyes) with normal parameters of visual function underwent dual perimetry assessment. Mean visual field boundaries and ocular rotation extremity values were similar for Humphrey and Octopus kinetic perimetry along horizontal meridians. Measurements for Humphrey perimetry were significantly smaller for superior and inferior visual field and rotations with ceiling effects at approximately 40 and 50 degrees, respectively. Use of visual field boundary overlays for 140 patient results showed high detection of the known abnormal visual field results by the Humphrey 850 perimeter (91.4% with I4e target; 95% with I2e target) but with notable exceptions for peripheral superior visual field defects.
CONCLUSIONS
The Humphrey perimeter's aspheric bowl introduces a ceiling effect for measurements in the superior and inferior visual field at approximately 40 and 50 degrees respectively. This results in potential diagnostic accuracy issues when measuring uniocular rotations, fields of binocular single and visual field boundaries in conditions that specifically impair superior and/or inferior ocular motility (e.g., thyroid eye disease) or visual fields (e.g., chiasmal compression).
目的
比较 Humphrey 850 视野计和 Octopus 900 视野计的动态视野检查，评估单眼旋转和双眼单视视野。
方法
前瞻性横断面研究比较 Humphrey 850 动态视野检查和 Octopus 900 动态视野检查。比较正常视力受试者两种视野计在视野边界、单眼旋转和双眼单视视野测量中的结果，比较平均向量端点值和测试持续时间。使用视野边界叠加图评估 I4e 和 I2e 目标在已知异常视野结果中 Humphrey 850 动态视野检查的检测潜能。
结果
15 名（30 只眼）具有正常视力功能参数的受试者接受了双视野检查评估。Humphrey 和 Octopus 动态视野检查在水平子午线的平均视野边界和眼旋转端点值相似。Humphrey 视野计的测量值在上方和下方视野以及在大约 40 度和 50 度的旋转时明显较小，有天花板效应。使用视野边界叠加图对 140 例患者的结果进行分析，Humphrey 850 视野计对已知异常视野结果的检测率较高（I4e 目标为 91.4%；I2e 目标为 95%），但在周边上方视野缺损方面有明显的例外。
结论
Humphrey 视野计的非球面碗在上方和下方视野约 40 度和 50 度处分别产生测量的天花板效应。这可能导致在测量特定影响上、下眼球运动（如甲状腺眼病）或视野（如视交叉压迫）的条件下的单眼旋转、双眼单视和视野边界的诊断准确性出现问题。
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