Q: Can I get a cochlear implant for severe sensorineural deafness in one ear? A: Many people have asked whether a cochlear implant in a patient with severe sensorineural deafness on one side of the ear can provide binaural hearing due to the lack of signal synchronization between the two ears. However, recent foreign studies have shown that cochlear implants in this group of patients with unilateral profound sensorineural deafness can integrate the acoustic and electrical signals from both ears to achieve binaural hearing. In addition, cochlear implants in these patients can: (1) improve speech recognition in noisy environments (2) improve sound source orientation (3) reduce tinnitus interference in patients with preoperative tinnitus, with an efficiency of >95% (4) the implant side does not affect the ability to hear speech in the contralateral normal ear (5) unilateral cochlear implants are better than bone anchored cochlear implants in terms of sound source orientation, hearing in noise, and natural sensation of hearing. (5) One-side cochlear implants are better than bone-anchored hearing aids (BAHAs) in terms of sound source orientation, hearing in noise, and natural sensory hearing. Therefore, cochlear implants can be used on the deaf side of a person who has good hearing in one ear and severe sensorineural hearing in the other ear.