Dr. Keyvan Kiakjouri, an ENT specialist, said: "The 18th cochlear implant and the first cochlear implant were performed on a 38-year-old man in Ayatollah Rouhani Hospital in Babol, while the hearing aid was no longer useful for this patient after 12 years of use." And there was no ability to amplify hearing and the cochlear cells were destroyed.
The faculty member of Babol University of Medical Sciences stated: Noting that cochlear implant surgery is performed for two groups, he added: The first group are patients who are under the age of speech, ie children from 1 to 3 years old, which is the best time for cochlear implantation and The other group of people has speech that can be operated on at any age.
Dr. Kiakjouri acknowledged that elderly patients must be able to speak and that hearing loss in adults is caused by illness, trauma or accident.
An important condition for cochlear implantation in adults is speech.
 Mohsen Monadi, director of cochlear implantation at Babol University of Medical Sciences, said: "Hearing loss in adults is caused by illness, trauma or accident, and sometimes a person may have some degree of congenital hearing loss from birth, which increases with age. 
Mr. Monadi, director of cochlear implantation at Babol University of Medical Sciences, added: "In any of the above cases, if the prescription of the hearing aid does not have the necessary efficiency for a deaf person or the use of a hearing aid is not useful, the adult will be a candidate for cochlear implant surgery." .
He continued: "Another important condition for cochlear implantation in adults is to have appropriate speech that can be understood by a deaf person."
Also, Dr. Hamidi, an anesthesiologist at Babol University of Medical Sciences, said on the sidelines of this surgery: "Cochlear implants have been performed rarely in Iran and have been the first operation in the province and neighboring provinces in adulthood."
He said: "The patient has the power to speak, but the equipment he uses to help hearing is not effective and it is hoped that after this surgery, the patient will be able to return to normal daily activities."