PDF(Pubmed)
Abstract：
Objectives: This research aimed to present a novel glasses-free distance random-dot stereotest system (GFDRDSS) using an eye-tracking method. Methods: A single-view autostereoscopic display applying a backlight control system combined with an eye-tracking method and the corresponding random-dot stereotest software were developed to create a GFDRDSS with a viewing distance of 5 m. The stereoacuity of 12 subjects with normal eye position was evaluated using the Randot Stereotest, Stereoscopic Test Charts vol. 3 (Yan\'s Charts), Distance Randot® Stereotest, and GFDRDSS. Results: The GFDRDSS could provide distinct and stable glasses-free stereoscopic perception even while the subject was moving their head. It could evaluate binocular disparities of 40-2,400 arcsec. Eleven subjects with normal near visual acuity had fine near stereovision (20-60 arcsec) using the Randot stereotest and Yan\'s Charts. Under refractive correction, 10 subjects had fine stereovision (≤60 arcsec) using the GFDRDSS at a distance of 5 m, and 9 had fine stereovision using the Distance Randot® Stereotest at 3 m. Other subjects described the 100 arcsec-level stereograms correctly. The results exhibited a concordance of stereoacuity within one degrade between the two distance stereotests. Conclusion: The proposed GFDRDSS can alternately project a couple of random-dot stereograms to the subjects\' eyes and provide a glasses-free distance stereotest, which showed good concordance with the Distance Randot® Stereotest. More data are needed for statistical studies.
摘要：
目标：本研究旨在提出一种使用眼睛跟踪方法的新型无眼镜距离随机点立体检测系统（GFDRDSS）。方法：开发了一种应用背光控制系统结合眼睛跟踪方法的单视图自动立体显示器以及相应的随机点立体测试软件，以创建观看距离为5m的GFDRDSS。使用RandotStereotest评估了12名具有正常眼位的受试者的立体敏锐度，立体测试图表卷。3（严氏图表），距离Randot®Stereotest,和GFDRDSS。结果：GFDRDSS即使在受试者移动头部时，也可以提供清晰而稳定的无眼镜立体感。它可以评估40-2,400弧秒的双眼差异。使用Randot立体测试和Yan\'s图表，11名具有正常近视敏度的受试者具有良好的近立体视觉（20-60弧秒）。在屈光矫正下，10名受试者使用GFDRDSS在5m距离处具有良好的立体视觉（≤60弧秒），和9在3m处使用DistanceRandot®Stereotest具有良好的立体视觉。其他受试者正确地描述了100弧秒水平的立体图。结果表明，在两次距离立体测试之间的一次降解中，立体敏锐度是一致的。结论：提出的GFDRDSS可以交替地将一对随机点立体图投射到受试者的眼睛，并提供无眼镜距离立体检测，与DistanceRandot®Stereotest显示出良好的一致性。统计研究需要更多的数据。
