Virtual reality simulation of epiretinal stimulation highlights the relevance of the visual angle in prosthetic vision
Virtual reality simulation of epiretinal stimulation highlights the relevance of the visual angle in prosthetic vision
复制标题
视网膜前刺激的虚拟现实模拟凸显了假肢视觉中视角的相关性
DOI：
10.1088/1741-2552/abb5bc
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发表时间：
2020
影响因子：
4
通讯作者：
D. Ghezzi
中科院分区：
文献类型：
--
作者：
J. Thorn;Enrico Migliorini;D. Ghezzi
objective.视网膜假体具有在患有外部视网膜营养不良的盲人患者中实现人工视觉的潜力。视网膜假体在日常活动中提供足够的人工视觉所需的电极的最佳数量、密度和覆盖范围仍然是一个悬而未决的问题，也是开发更好的植入物所需的重要设计参数。approach.为了解决这个问题，我们研究了视角，像素数量和像素密度之间的相互作用，而不受小电极数量的限制。我们在虚拟现实环境中实现了假体视觉，以模拟使用视网膜假体的真实体验。我们设计了四个不同的任务模拟：物体识别，文字阅读，感知下降的步骤和过马路。主要结果。研究结果表明，在所有的任务中，视角对提高被试的成绩起着最重要的作用。意义新的视网膜假体的设计应考虑到恢复的视角的相关性，以提供一个有用的和有价值的视觉援助，深盲或全盲患者。
Objective. Retinal prostheses hold the potential for artificial vision in blind patients suffering from outer retinal dystrophies. The optimal number, density and coverage of the electrodes that a retinal prosthesis should have to provide adequate artificial vision in daily activities is still an open question and an important design parameter needed to develop better implants. Approach. To address this question, we investigated the interaction between the visual angle, the pixel number and the pixel density without being limited by a small electrode count. We implemented prosthetic vision in a virtual reality environment in order to simulate the real-life experience of using a retinal prosthesis. We designed four different tasks simulating: object recognition, word reading, perception of a descending step and crossing a street. Main results. The results of our study showed that in all the tasks the visual angle played the most significant role in improving the performance of the participant. Significance. The design of new retinal prostheses should take into account the relevance of the restored visual angle to provide a helpful and valuable visual aid to profoundly or totally blind patients.
影响因子：
2.4
作者：
Hayes, JS;Yin, VT;Dagnelie, G
通讯作者：
Dagnelie, G
影响因子：
4.4
作者：
Thompson, RW;Barnett, GD;Dagnelie, G
通讯作者：
Dagnelie, G
影响因子：
13.7
作者：
Humayun MS;Dorn JD;da Cruz L;Dagnelie G;Sahel JA;Stanga PE;Cideciyan AV;Duncan JL;Eliott D;Filley E;Ho AC;Santos A;Safran AB;Arditi A;Del Priore LV;Greenberg RJ;Argus II Study Group
通讯作者：
Argus II Study Group