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Monocular Visual Confusion for Field Expansion

用于视野扩展的单眼视觉混乱

基本信息

批准号：
10686363
负责人：
ELI PELI
金额：
$ 44.33万
依托单位：
SCHEPENS EYE RESEARCH INSTITUTE
依托单位国家：
美国
项目类别：
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

项目摘要

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，但通常不会允许驾驶。所有这些因素都严重限制了他们的独立性和生活质量。各种视觉为扩大现场范围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。新颖的概念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。同向偏盲患者。这种方法使用外围单边棱镜（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图。由于双眼视觉混乱，同向偏盲患者看到双眼的视线发生了偏移和正常视野一起使用单边棱镜实现真正的视场扩展。然而，这种方法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视野的同时（单眼）叠加视图。双边装配多路棱镜（双眼上的棱镜）可显示每只眼睛的移动和透视视图，因此可以减少双眼竞争并提供移动和透视的三维信息意见。然而，作为权衡，每个视图的对比度都会降低一半。在这里，我们将研究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。单眼视觉。眼睛失明是美国常见的失明现象之一，并增加了失明的风险从导视眼的鼻侧与其他行人发生碰撞。由于复用棱镜提供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°，双眼视野大小几乎恢复正常。在这里我们建议实施、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了一种悬挂式复用棱镜眼镜，以便于佩戴/摘下。我们将测试该设备正在使用虚拟现实步行模拟器进行临床试验。