To investigate a suitable design of interactive objects in the fixation‐triggered eye‐control interface, this study conducted two ergonomic experiments based on the location of an object, area of the object, and distance between adjacent objects. Experiment 1 investigated the priority distribution of different regions and recommended values of object sizes in different regions. The results showed that middle‐middle (MM) area is the optimal area, while middle‐left (ML) area, middle‐right (MR) area, and upper‐left (UL) area are suboptimal areas, and the remaining are general areas. The recommended minimum sizes for the optimal area, suboptimal area, and general area are 2.636° (200 px on the screen of a 1920 px × 1080 px 14 inch monitor), 2.978° (225 px on the screen of a 1920 px × 1080 px 14 inch monitor) and 3.322° (250 px on the screen of a 1920 px × 1080 px 14‐inch monitor), respectively. Experiment 2 conducted ergonomic experiments of different distances between adjacent objects in horizontal and vertical distributions. The results showed that the appropriate setting of the distribution and size of the objects showed no significant difference between different levels of spacing on the trigger accuracy rate and task completion time. Further, 1.032° (75 px on the screen of a 1920 px × 1080 px 14‐inch monitor) could be recommended as the most suitable spacing. According to the conclusions of Experiments 1 and 2, an optimized eye‐control interface and the NASA‐TLX scale were used to verify the validity and scientificity of the experimental results. The conclusions can be employed to improve the interaction efficiency of the eye‐control system and user experience and expand the application field of eye control.

中文翻译：

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提高凝视控制工具的准确性：有关交互式对象的最佳位置，大小和间距的设计建议

为了研究在固定触发的眼控界面中交互式对象的合适设计，本研究基于对象的位置，对象的面积以及相邻对象之间的距离进行了两次人体工程学实验。实验1研究了不同区域的优先级分布以及不同区域中对象大小的推荐值。结果表明，中（MM）区域是最佳区域，而中左（ML）区域，中右（MR）区域和左上（UL）区域是次优区域，其余区域为最佳区域地区。最佳区域，次佳区域和一般区域的建议最小尺寸为2.636°（1920 px×1080 px 14英寸显示器的屏幕上为200 px），2.978°（1920 px×1080的屏幕上为225 px） px 14英寸显示器）和3。322°（在1920 px×1080 px 14英寸显示器的屏幕上分别为250 px）。实验2进行了人体工程学实验，以水平和垂直分布对相邻对象之间的不同距离进行了测试。结果表明，对对象的分布和大小的适当设置在触发准确率和任务完成时间上，不同级别的间距之间没有显着差异。此外，建议将1.032°（在1920 px×1080 px 14英寸显示器的屏幕上为75 px）作为最合适的间距。根据实验1和2的结论，使用优化的眼控界面和NASA‐TLX量表来验证实验结果的有效性和科学性。