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.

项目摘要/摘要 有视野丧失的人报告与其他行人或物体相撞，通常不会 被允许开车。所有这些因素都严重制约了他们的独立性和生活质量。各种视觉效果 AIDA开发用于现场扩展，以检测机动性中的碰撞，但取得的成功有限。新奇的概念 通过移位进行视觉多路传输，结合双目视觉混淆，已被证明是一种有效的辅助治疗方法 患有同名偏盲的患者。这种方法使用外周单边棱镜(一只眼睛上的棱镜) 从而显示出从带有棱镜的眼睛的盲区移动的视线，而另一只眼睛则看到 正常视图。在双眼视觉混淆的情况下，同向性偏盲患者的两个视野都发生了变化 并利用单边棱镜实现真正的视场扩展。然而，这种方法 导致两个不同视角之间的竞争，这交替和减少了检测 表现减半。 为了克服这一局限，我们发明了一种新的光学元件--多路复用棱镜，它提供了 同时(单目)叠加移动的和直接的透视视场。双边 多路复用棱镜(两只眼睛上的棱镜)的装配显示了每只眼睛的移位和透视视图 从而可以减少双目竞争并提供移位和透视的三维信息 视图。然而，作为一种权衡，每个视图的对比度都会减半。在这里，我们将研究 影响同质性偏盲患者视野扩大碰撞检测的因素 虚拟现实行走模拟器，找到最好的配置，竞争更少。 多路复用棱镜也是后天获得性疾病患者唯一可能的视野扩展方案 单目视觉。在美国，失去一只眼睛是一种常见的视野损失，会增加患上 从视线的鼻侧与其他行人相撞。由于多路复用棱镜提供 同时透视和移动视角，在鼻梁上安装多路复用棱镜可提供 视野恢复至90°，基本恢复正常双眼视野大小。在这里，我们建议 实施、调整和测试多路复用棱镜作为后天获得性疾病患者辅助手段的有效性 单目视觉和开发一种易于佩戴/摘下的悬挂式多路复用棱镜。我们将测试 该设备在临床试验中使用了虚拟现实行走模拟器。