[Progress in the treatment of single-sided deafness with artificial hearing aids]

Single-sided deafness（SSD） is a common disease. Compared with normal hearing people, unilateral deaf patients often suffer from the loss of sound source localization ability and speech recognition in complex environments due to the lack of binaural summation effect, squelch effect, spatial demasking effect, and the presence of head shadow effect. Patients' quality of life and professional activities are always poor. Therefore, this article will review the related definitions of SSD, epidemiology, hazards, and artificial hearing aids in the application of SSD patients.