Chauhan B C, House P H
Department of Ophthalmology, University of British Columbia, Vancouver, Canada.
Ophthalmology. 1991 Jan;98(1):79-83. doi: 10.1016/s0161-6420(91)32337-6.
The authors studied the effects of threshold, age, and visual field location on intratest variability in 11 normal subjects between the ages of 15 and 50 years (mean, 35.37 years). The subjects were tested with a conventional manual (Tübinger) perimeter and a high-pass resolution (Ring) perimeter at the following locations: (0 degrees, 30 degrees), (0 degrees, 15 degrees), (0 degrees, -15 degrees), and (0 degrees, -30 degrees). Frequency-of-seeing curves were constructed to obtain accurate estimates of threshold and intratest variability. Although location did not have a significant effect on intratest variability in conventional perimetry, intratest variability increased with threshold (P = 0.031) and age (P = 0.012). The results with resolution perimetry contrasted sharply and showed that neither threshold, age, nor location had a significant effect on intratest variability (P greater than 0.225). Although the thresholds with the two types of perimetry were correlated, intratest variability was not. These results show that resolution perimetry may be able to bypass some of the limitations encountered in obtaining thresholds with conventional perimetry, thereby providing more reliable information.
作者研究了阈值、年龄和视野位置对11名年龄在15至50岁（平均35.37岁）的正常受试者测试内变异性的影响。使用传统手动（图宾根）视野计和高通分辨率（环形）视野计在以下位置对受试者进行测试：（0度，30度）、（0度，15度）、（0度， -15度）和（0度， -30度）。构建了视见频率曲线以准确估计阈值和测试内变异性。虽然在传统视野检查中位置对测试内变异性没有显著影响，但测试内变异性随阈值（P = 0.031）和年龄（P = 0.012）增加。分辨率视野检查的结果形成鲜明对比，表明阈值、年龄和位置对测试内变异性均无显著影响（P大于0.225）。虽然两种视野检查的阈值相关，但测试内变异性不相关。这些结果表明，分辨率视野检查可能能够绕过传统视野检查在获取阈值时遇到的一些限制，从而提供更可靠的信息。
