3D Nystagmus

Measurement of torsional eye movements may provide better insight into the nature of BPPV and the involved canals. The first attempts to quantify torsional eye movements date back to 1980’s and 1990’s [see (7) for a review]. Although three-dimensional (3D) nystagmus recordings in BPPV patients have been reported, few have specified technical issues that may have affected the observed responses (8).

Horizontal, vertical, and torsional eye movements were recorded and analyzed with the VisualEyes™ VNG system (Interacoustics,Denmark). Torsional eye movements were quantified based on the method described by Otero-Millan et al.

DOI: 10.3389/fneur.2025.1549407

非侵入性且可靠地测量扭转一直是一个长期的挑战，以前的方法缺乏实时能力或遭受侵入性伪影.我们提出了一种使用现代计算机视觉软件（OpenCV）和虹膜识别概念测量三维眼球运动的新方法。为了测量扭转，我们使用整个虹膜的模板匹配，并自动考虑眼睑对虹膜和瞳孔的遮挡。当前设置以100 Hz双目工作，噪声<0.1°，在向左、向右和向上凝视20°和向下凝视10°范围内精确。这种新方法可以广泛应用，填补了许多科学和临床学科的空白。

DOI: 10.1167/15.14.11

DOI: 10.3389/fnins.2022.988733