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.

项目概要/摘要 视野丧失的人报告与其他行人或物体发生碰撞，但通常不会 所有这些因素都严重限制了他们的独立性和生活质量。 为现场扩展而开发的辅助设备来检测移动中的碰撞，但取得的成功有限。 通过移动进行视觉复用，结合双眼视觉混淆，已被证明是一种有效的辅助方法。 该方法使用周边单侧棱镜（一只眼睛上的棱镜）。 因此，用棱镜显示眼睛盲区的视野发生了变化，而另一只眼则看到了 正常视野 由于双眼视觉混乱，同向偏盲患者看到双眼的视野发生了偏移。 和正常视图一起并使用单边棱镜实现真正的视场扩展。 导致两只眼睛的两种不同视图之间的竞争，从而交替并减少检测 性能减半。 为了克服这个限制，我们发明了一种新的光学元件——复用棱镜，它提供了 移动和直接透视双边视野的同步（单眼）叠加视图。 装配多路棱镜（双眼上的棱镜）可显示每只眼睛的移动视图和透视视图， 因此可以减少双眼竞争并提供移动和透视的三维信息 然而，作为一种权衡，每个视图的对比度都减少了一半。在这里，我们将研究的影响。 这些因素对同向偏盲患者视野扩展碰撞检测的影响 虚拟现实步行模拟器，找到最佳配置，减少竞争。 多路复用棱镜也是获得性屈光不正患者唯一可能的视野扩展解决方案。 单眼视力丧失是美国常见的视野丧失之一，会增加视力丧失的风险。 由于多路复用棱镜提供了从视眼鼻侧与其他行人发生碰撞的能力。 同时透视和移动视图，将多路复用棱镜安装在鼻梁上可提供 视野恢复至90°，几乎恢复正常的双眼视野大小。 实施、调整和测试多路复用棱镜的有效性，以帮助患有获得性遗传病的患者 单眼视觉并开发一种悬挂式复用棱镜眼镜，以便于佩戴/摘下我们将进行测试。 该设备正在使用虚拟现实步行模拟器进行临床试验。