Hearing aids usually have one or two
First, do a check on hearing conditions. See if hearing requires binaural matching or single ear. The light selection is recommended for the binaural selection, so that the sound has a sense of direction and listening is more comfortable. Suppresses tinnitus and reduces the burden of listening to one ear. We should consider the hearing loss of the wearer and whether there is hearing loss on both sides. If the wearer has hearing loss on the side with normal hearing, there is also a situation where there is no residual hearing on the wearer’s side. One side is hearing loss, in which case the hearing aid is worn on one side. But if both ears are hearing down from a professional point of view it is recommended to wear both ears.
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