Wearable optical-digital assistive device for low vision students
Wearable optical-digital assistive device for low vision students
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低视力学生可穿戴光学数字辅助装置
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
PremNandhini Satgunam
中科院分区：
文献类型：
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作者：
B. Afinogenov;J. Coles;Sailashri Parthasarathy;Jessica Press;Ralina Tsykunova;A. Vasilenko;Jaya Narain;N. Hanumara;A. Winter;PremNandhini Satgunam
低视力的人有有限的残余视力，可以通过高水平的放大大大增强。目前的辅助技术是为远场或近场放大量身定制的，但不是两者兼而有之。与L.V. Prasad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，以满足学生的近场和远场放大需求。对每个模块的关键需求、系统架构和设计决策进行了分析和量化。制造了一个概念验证原型，可以实现高达8倍的放大率和长达8小时的电池寿命。使用Snellen图表进行的潜在用户评价显示识别了以前无法识别的字符。进一步的反馈意见表明，该系统可用作一般的无障碍辅助工具。
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.