The prosthetic care requires a deep knowledge of audiology, it is very time consuming and expensive process. The first part describes the technology of analog hearing aids ušed at the end of the last century, digital hearing aids from the nineties of the last century and from the beginning of the 21st century. The article gives the short information about the indication of hearing aids. There are described priorities of digital hearing aids and in-the-ear (ITE), in-the-concha (ITC) and completely-in-the-ear (CIC) hearing aids, that will be mostly ušed

        Key words: prosthetic care, technology of hearing aids, indications of hearing aids