Monocular Visual Confusion for Field Expansion

用于视野扩展的单眼视觉混乱

• 批准号: 10228019
• 负责人: Jae-Hyun Jung
• 金额: $ 43万
• 依托单位: SCHEPENS EYE RESEARCH INSTITUTE
• 依托单位国家: 美国
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10228019
• 关键词: 3-Dimensional; 3D Print; Affect; Appearance; Behavior; Bilateral; Binocular rivalry; Clinical Trials; Clip; Confusion; Crowding; Cues; Detection; Devices; Elements; Eye; Homonymous Hemianopia; Image; Individual; Methods; Monitor; Monocular Vision; Motion; Motor; Nose; Optics; Patients; Performance; Peripheral; Quality of life; Randomized Controlled Clinical Trials; Reporting; Risk; Side; Source; System; Testing; Training; Vision; Vision Disparity; Visual; Visual Aid; Visual Fields; Walking; base; blind; effectiveness testing; flexibility; gaze; head mounted display; improved; mixed reality; monocular; novel; simulation; stereoscopic; success; transmission process; virtual; virtual reality

PROJECT SUMMARY/ABSTRACT Individuals with visual field loss report collisions with other pedestrians or objects and are commonly not permitted to drive. All of these factors severely restrict their independence and quality of life. Various visual aids developed for field expansion to detect collision in mobility but had limited success. The novel concept of vision multiplexing by shifting, combined with binocular visual confusion, has been a proven effective aid for patients with homonymous hemianopia. This approach uses peripheral unilateral prisms (prisms on one eye) and thus shows a shifted view from the blind field in the eye with the prism while the fellow eye sees the normal view. With binocular visual confusion, patients with homonymous hemianopia sees both shifted view and normal view together and achieve true field expansion using unilateral prisms. However, this approach results in the rivalry between two different views from two eyes, which alternates and reduce the detection performance in half. To overcome this limitation, we invented a new optical element, multiplexing prism, which provides simultaneous (monocularly) superimposed views of the shifted and direct see-through fields of view. Bilateral fitting of multiplexing prisms (prisms on both eyes) shows both shifted and see-through views in each eye and thus may reduce the binocular rivalry and provide three-dimensional information of shifted and see-through views. However, as a trade-off, the contrast of each view is reduced in half. Here, we will study the impact of these factors on the collision detection in field expansion of patients with homonymous hemianopia using virtual reality walking simulator and find the best configuration with less rivalry. The multiplexing prism is also the only possible field expansion solution for patients with acquired monocular vision. Losing sight of an eye is one of the common field loss in the US and increase the risk of collision with other pedestrians from the nasal side of the seeing eye. Since the multiplexing prism provides both see-through and shifted views simultaneously, fitting the multiplexing prism on the nose bridge provides recover of the visual field up to 90°, which recovers almost normal binocular visual field size. Here we propose to implement, tune, and test the effectiveness of the multiplexing prism as an aid for patients with acquired monocular vision and develop a hang-on multiplexing prism glasses for easy wearing/taking off. We will test the device in a clinical trial with virtual reality walking simulator.

项目总结/摘要 有视野丧失的人报告与其他行人或物体发生碰撞， 允许开车。所有这些因素都严重限制了他们的独立性和生活质量。各种视觉 开发了用于现场扩展的辅助设备，以检测移动中的碰撞，但成功有限。的新颖概念 通过移位的视觉多路复用，结合双眼视觉混乱，已被证明是有效的辅助手段， 同侧偏盲患者。这种方法使用周边单边棱镜（一只眼睛上的棱镜） 因此示出了从具有棱镜的眼睛中的盲场偏移的视图，而另一只眼睛看到了 正常视图。由于双眼视觉混乱，同向偏盲患者会看到两个移位的视野 和法向视图结合在一起，并使用单向棱镜实现真场扩展。但是这种方法 导致来自双眼的两个不同视图之间的竞争，其交替并降低检测 业绩减半。 为了克服这一限制，我们发明了一种新的光学元件，多路复用棱镜， 同时（单目）叠加移位和直接透视视场的视图。双边 多路复用棱镜（双眼上的棱镜）的装配示出了每只眼睛中的移位视图和透视视图， 从而可以减少双眼竞争，提供平移和透视的三维信息， 意见.然而，作为一种折衷，每个视图的对比度减少了一半。在这里，我们将研究 这些因素对正视偏盲患者视野扩展中碰撞检测的影响 虚拟现实步行模拟器，并找到最佳配置与较少的竞争。 多路复用棱镜也是唯一可能的领域扩大解决方案，为患者获得 单眼视觉眼睛失明是美国常见的视野丧失之一， 与其他行人从鼻侧的视眼碰撞。由于多路复用棱镜提供 同时透视和移位视图，将多路复用棱镜安装在鼻梁上， 恢复视野高达90°，恢复几乎正常的双眼视野大小。在这里我们建议 实施、调整和测试多路复用棱镜作为获得性糖尿病患者辅助手段的有效性。 单目视觉，并开发一种挂式多路复用棱镜眼镜，便于佩戴/脱下。我们将测试 该设备在临床试验与虚拟现实步行模拟器。