Is the hearing aid divided?–Do you want to wear hearing aids?
Hearing aids are divided into left and right ears, red usually represents the right ear, and blue represents the left ear..Both the ear and the back machine have the right and left ears. Because if both ears have hearing loss, the hearing of the right ear is different from the hearing of the left ear. The hearing aids will set different gains and other parameters according to the hearing of the left and right ears. The size of the left and right ear canals of the custom machine is also different.
Link：Hearing aids are divided into right and left - wear hearing aids to divide the left and right ears?
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