Measuring visual information gathering in individuals with ultra low vision using virtual reality.

Measuring visual information gathering in individuals with ultra low vision using virtual reality.
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DOI:
10.1038/s41598-023-30249-z
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发表时间:
2023-02-23
期刊:
影响因子:
4.6
通讯作者:
Dagnelie, Gislin
Dagnelie, Gislin
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kartha, Arathy;Sadeghi, Roksana;Bradley, Chris;Tran, Chau;Gee, Will;Dagnelie, Gislin

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ULV患者(视力≤ 20/1600或1.9 logMAR)缺乏形位视力,但具有可用于日常生活中一系列活动的基本视力水平。然而,目前的临床测试旨在评估形式视力,并没有提供信息的范围内的视觉引导的活动,可以在日常生活中使用ULV进行。鉴于招募ULV患者的临床试验越来越多,了解这一点很重要(例如,基因疗法、干细胞疗法)或将盲人的视力恢复到ULV范围(视觉假体)。在这项研究中,我们开发了一组19个活动(项目)在虚拟现实中,涉及空间定位/检测,运动检测,和运动方向,可用于评估视觉表现的人与ULV。我们使用基于信号检测理论的潜变量分析,在相对d ′轴上估计项目难度和个人能力的测量值。这些项目代表了ULV患者(相对d′为-0.74至2.2)异质组中的一系列难度水平(相对d ′为-1.09至0.39),显示了该工具作为临床试验结果测量的实用性。
People with ULV (visual acuity ≤ 20/1600 or 1.9 logMAR) lack form vision but have rudimentary levels of vision that can be used for a range of activities in daily life. However, current clinical tests are designed to assess form vision and do not provide information about the range of visually guided activities that can be performed in daily life using ULV. This is important to know given the growing number of clinical trials that recruit individuals with ULV (e.g., gene therapy, stem cell therapy) or restore vision to the ULV range in the blind (visual prosthesis). In this study, we develop a set of 19 activities (items) in virtual reality involving spatial localization/detection, motion detection, and direction of motion that can be used to assess visual performance in people with ULV. We estimated measures of item difficulty and person ability on a relative d prime (d′) axis using a signal detection theory based analysis for latent variables. The items represented a range of difficulty levels (− 1.09 to 0.39 in relative d′) in a heterogeneous group of individuals with ULV (− 0.74 to 2.2 in relative d′) showing the instrument’s utility as an outcome measure in clinical trials.
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发表时间: 2019-11-01
期刊: JOURNAL OF VISION
影响因子: 1.8
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影响因子: 4.4
作者:
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