Behaviors Related to Artificial Visual Field Defects - A Pilot Study of Video-Based Perimetry
Behaviors Related to Artificial Visual Field Defects - A Pilot Study of Video-Based Perimetry
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与人工视野缺陷相关的行为 - 基于视频的视野测量的初步研究
DOI：
10.1109/access.2021.3080687
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发表时间：
2021
期刊：
影响因子：
3.9
通讯作者：
Xiaoyang Mao
中科院分区：
文献类型：
--
作者：
Changtong Mao;Kentaro Go;Yuichiro Kinoshita;Kenji Kashiwagi;Masahiro Toyoura;Issei Fujishiro;Jianjun Li;Xiaoyang Mao
视野缺陷（VFD）可以由许多疾病引起，其中一些（例如，青光眼）是人类失明的主要原因。目前的视野检查被定义为视野功能的测量，对患者有很高的要求，如长期固定和与系统的可靠交互。在这项初步研究中，我们结合了视频和眼动跟踪技术在自由观看任务，并探讨了不同类型的人工VFD，如偏盲，垂直VFD和隧道视觉的人的不同眼动行为。我们进行了这项任务，在一个凝视特遣队的方式，其中38名参与者与正常视力被招募到观看一组视频单眼。在任务期间，由跟踪器记录眼睛注视数据。我们假设，模拟VFD的人将产生一个更积极的眼动应对机制，以弥补他们的视野劣势。提出了一种新的眼动量测量方法--眼动量（MA）。通过比较VFD组和对照组之间的MA值，观察到人工VFD引起的统计学显著差异。此外，我们还发现人工偏盲和下视觉功能缺陷分别导致被试在水平和垂直方向上产生的MA增加。而人工隧道视觉则相反，在水平和垂直方向上均导致MA降低。所提出的指标可以被用作潜在的生物标志物区分VFD在自由观看任务。
Visual field defects (VFDs) can be caused by numerous diseases, some of which (e.g., glaucoma) are the main causes of blindness in humans. The present perimetry, which is defined as the measurement of visual field function, has high requirements for patients such as long-term fixation and reliable interaction with the system. In this pilot study, we combined the videos and eye-tracking techniques in a free-watching task and explored the different eye movement behaviors of people with several types of artificial VFDs, such as hemianopia, altitudinal VFDs, and tunnel vision. We carried out the task in a gaze-contingent modality where 38 participants with normal vision were recruited to watch a group of videos monocularly. The eye gaze data were recorded by the tracker during the task. We hypothesized that people with simulated VFDs will produce a more active eye movement coping mechanism to compensate for their visual field disadvantage. A new measurement called eye movement amount (MA) was proposed to describe the amount of eye movement toward a specific direction. Statistically significant differences caused by artificial VFDs were observed by comparing the MA values between the VFD groups and the control group. In addition, we found artificial hemianopia and inferior VFDs lead participants to produced increased MA in the horizontal and vertical directions respectively. Artificial tunnel vision, on the contrary, induces a decreased MAs in both horizontal and vertical directions. The proposed metrics can be used as potential biomarkers for distinguishing VFDs in a free-watching task.