使用虚拟现实测量超低视力视觉引导运动表现的补充数据表1

数据集获取（Figshare）

• 源站标题：Data_Sheet_1_Measuring visually guided motor performance in ultra low vision using virtual reality.PDF
• DOI：10.3389/fnins.2023.1251935.s001
• 发布日期：2023-12-20
• 文件数：1 个
• 文件总体积：51.26 KB
• 源站页面：https://frontiersin.figshare.com/articles/dataset/Data_Sheet_1_Measuring_visually_guided_motor_performance_in_ultra_low_vision_using_virtual_reality_PDF/24872394

命令行下载

curl -L -o "Data_Sheet_1_Measuring visually guided motor performance in ultra low vision using virtual reality.PDF" "https://ndownloader.figshare.com/files/43764282"

文件清单

• Data_Sheet_1_Measuring visually guided motor performance in ultra low vision using virtual reality.PDF（51.26 KB）

文件总体积 51.26 KB（源站 API 实测）。

数据加载示例（图像类）

from PIL import Image
import glob, os

files = (glob.glob(os.path.join(path, "**", "*.png"), recursive=True)
       + glob.glob(os.path.join(path, "**", "*.jpg"), recursive=True)
       + glob.glob(os.path.join(path, "**", "*.tif"), recursive=True))
print("图像文件数:", len(files))
img = Image.open(files[0]); print("尺寸/模式:", img.size, img.mode)

# torchvision Dataset 方式:
# from torchvision import datasets
# ds = datasets.ImageFolder(path)  # 要求 子目录=类别

目录组织与标注格式以源站说明和下载后实际文件为准。

数据说明

IntroductionUltra low vision (ULV) refers to profound visual impairment where an individual cannot read even the top line of letters on an ETDRS chart from a distance of 0.5 m. There are limited tools available to assess visual ability in ULV. The aim of this study was to develop and calibrate a new performance test, Wilmer VRH, to assess hand-eye coordination in individuals with ULV.
MethodsA set of 55 activities was developed for presentation in a virtual reality (VR) headset. Activities were grouped into 2-step and 5-step items. Participants performed a range of tasks involving reaching and grasping, stacking, sorting, pointing, throwing, and cutting. Data were collected from 20 healthy volunteers under normal vision (NV) and simulated ULV (sULV) conditions, and from 33 participants with ULV. Data were analyzed using the method of successive dichotomizations (MSD), a polytomous Rasch model, to estimate item (difficulty) and person (ability) measures. MSD was applied separately to 2-step and 5-step performance data, then merged to a single equal interval scale.
ResultsThe mean ±SD of completion rates were 98.6 ± 1.8%, 78.2 ± 12.5% and 61.1 ±34.2% for NV, sULV and ULV, respectively. Item measures ranged from −1.09 to 5.7 logits and − 4.3 to 4.08 logits and person measures ranged from −0.03 to 4.2 logits and −3.5 to 5.2 logits in sULV and ULV groups, respectively. Ninety percent of item infits were within the desired range of [0.5,1.5], and 97% of person infits were within that range. Together with item and person reliabilities of 0.94 and 0.91 respectively, this demonstrates unidimensionality of Wilmer VRH. A Person Item map showed that the items were well-targeted to the sample of individuals with ULV in the study.
DiscussionWe present the development of a calibrated set of activities in VR that can be used to assess hand-eye coordination in individuals with ULV. This helps bridge a gap in the field by providing a validated outcome measure that can be used in vision restoration trials that recruit people with ULV, and to assess rehabilitation outcomes in people with ULV.

许可

CC BY 4.0

引用

学术使用请引用 DOI 10.3389/fnins.2023.1251935.s001（source: https://frontiersin.figshare.com/articles/dataset/Data_Sheet_1_Measuring_visually_guided_motor_performance_in_ultra_low_vision_using_virtual_reality_PDF/24872394）。