2025年3月27日 · The meaning of ISOPTER is a contour line in a representation of the visual field around the points representing the macula that passes through the points of equal visual acuity.

isopter In the determination of visual fields, it is the contour line representing the limits of equal retinal sensitivity to a given test target. See visual field ; perimeter .

The line that connects these similar visual thresholds is called an isopter. In Figure 116.1, the large oval circle indicates that the target I-4e was seen at all these points of the visual field during steady gaze on central fixation. A smaller target (I-2e) subtends a smaller amount of visual field.

A. Is the isopter smooth, as expected for a normal hill of vision? B. Is there restriction? Examples would be a nasal step in papilloedema or an altitudinal defect in anterior ischaemic optic neuropathy. C. Are the isopters spaced, as expected for the normal hill of vision? (1) A tiny central field with ‘stacked’ isopters—very close to ...

『欧路词典』为您提供isopter的用法讲解，告诉您准确全面的isopter的中文意思，isopter的读音，isopter的同义词，isopter的反义词，isopter的例句。

In this study, we determined the normal position of 4 isopters frequently used to plot the peripheral visual field. The plots have been printed in a scale of 1:4 in order to facilitate its use. Photocopying the figures on transparencies by scaling them with a factor 4 will allow to superpose the tra …

2024年9月27日 · isopter (plural isopters) A line on a graph or diagram showing places of equal visual acuity; Any termite of the infraorder Isoptera

2018年10月19日 · 等视线（Isopter） 视岛上任何一点的垂直高度即表示该点的视敏度，同一垂直高度各点的连线称为视岛的等高线，在视野学上称为等视线。 生理盲点（Physiologic Blind Sport）

2015年12月12日 · Each of these lines is called an isopter. Here are some conceptual take-aways: A small and dim object can be within our theoretical extent of vision, but be completely undetectable to us. I tried to use this fact to explain why I couldn't see all of the dirty dishes lying around the house, but my wife wouldn't buy it.

用对比敏感度的自然 对数表示视觉敏感度，以分贝（decibel，dB） 表示。 视野检查：测量视野中不同部位的视功 能。 只能是抽样测量，而非 整体测量。 衡量标准： 阈值对比度（CT），CT=ΔL/LB。 能够精确地测定视野中某一点的阈值敏感 度，做到定量检测。 岛。 ff谢谢！ 如果阳性或阴性率≥33%，视野检查结果 被认为不可靠。 用某一刺激强度光标从视野周边不同方 位向中心移动，记录受试者刚能感受到 视标出现或消失的点。 视野的检查及意义- CT的倒数 …