Eye Tracking device System of foreign countries Infrared Sensor technology is mainly used in the detection of both eyes, side 2, the patient gazed to the desired location and using eye blink 1 time instead of pressing Enter, which will have a problem with elderly patients who may have astigmatism or patients there is a skew behavior. When they intend to select or type A location, but the Infrared Sensor to capture the B position as a result, foreign equipment. Does not work well, and there are restrictions on the use of the patient.
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