适用于低视力学生的可穿戴光学数字辅助设备。

Wearable optical-digital assistive device for low vision students.

作者信息

Afinogenov Boris I, Coles James B, Parthasarathy Sailashri, Press-Williams Jessica, Tsykunova Ralina, Vasilenko Anastasia, Narain Jaya, Hanumara Nevan C, Winter Amos, Satgunam PremNandhini

出版信息

Annu Int Conf IEEE Eng Med Biol Soc. 2016 Aug;2016:2083-2086. doi: 10.1109/EMBC.2016.7591138.

DOI:10.1109/EMBC.2016.7591138

PMID:28268741

Abstract

People with low vision have limited residual vision that can be greatly enhanced through high levels of magnification. Current assistive technologies are tailored for far field or near field magnification but not both. In collaboration with L.V. Prasad Eye Institute (LVPEI), a wearable, optical-digital assistive device was developed to meet the near and far field magnification needs of students. The critical requirements, system architecture and design decisions for each module were analyzed and quantified. A proof-of-concept prototype was fabricated that can achieve magnification up to 8x and a battery life of up to 8 hours. Potential user evaluation with a Snellen chart showed identification of characters not previously discernible. Further feedback suggested that the system could be used as a general accessibility aid.

摘要

低视力患者的残余视力有限，通过高倍放大可以得到显著增强。目前的辅助技术是针对远场或近场放大量身定制的，但并非两者兼顾。与L.V.普拉萨德眼科研究所（LVPEI）合作，开发了一种可穿戴的光学数字辅助设备，以满足学生对近场和远场放大的需求。对每个模块的关键要求、系统架构和设计决策进行了分析和量化。制作了一个概念验证原型，其放大倍数可达8倍，电池续航时间可达8小时。使用斯内伦视力表进行的潜在用户评估表明，该设备能够识别以前无法辨别的字符。进一步的反馈表明，该系统可作为一种通用的无障碍辅助工具。