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Journal of Medical Signals and Sensors، جلد ۱۳، شماره ۴، صفحات ۳۰۷-۳۱۸
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عنوان انگلیسی Design and Implementation of a Smart Wireless Controlled Visual Acuity Measurement System
چکیده انگلیسی مقاله In this article, a smart visual acuity measurement (VAM) system is designed and implemented. Hardware of the proposed VAM system consists of two parts: a wireless remote controller, and a high-resolution LCD controlled through a Raspberry-Pi mini-computer. In the remote controller, a 3.5” graphical LCD with a touch screen is used as a human-machine interface. When a point is pressed on the touch screen, the unique identifier (ID) code of that point as well as its page number is transmitted to the Raspberry-Pi. In the Raspberry-Pi, data are received and processed by a smart application coded in visual studio software. Then, the commanded tasks are executed by the Raspberry-Pi’s operating system. Numerous charts, characters, and pictures are stored in the proposed VAM system to provide various VAM options while the size of the optotypes is adjusted automatically based on the distance of the patient from the LCD. The performance of the proposed VAM system is examined practically under the supervision of an expert optometrist where the results indicate that visual acuity, astigmatism, and color blindness of patients can be examined precisely through the proposed VAM system in an easier and more comfortable manner.
کلیدواژه‌های انگلیسی مقاله LCD E-chart, Raspberry-Pi, visual acuity, visual acuity measurement, wireless communication network
نویسندگان مقاله | Mohammad Hossein Vafaei
Medical Image and Signal Processing Research Center, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran


| Ebrahim Ahmadi Beni


نشانی اینترنتی http://jmss.mui.ac.ir/index.php/jmss/article/view/694
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Methodology Articles
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