CROS II

Single-sided deafness (often referred to as SSD), results in an individual having one well-functioning “good” ear, and one ear that is not able to hear very well at all. Even when trying to use a hearing aid in the “poor” ear, it tends to be unsuccessful due to the extent of the hearing loss and the type of hearing damage in this ear. SSD is often experienced after a sudden hearing loss, usually due to a viral infection or in some cases due to a lesion causing damage to the nerve of hearing.

Our team has worked extensively with patients presenting with single-sided deafness and understand the difficulties and complexities involved. It is very difficult to identify where the sound comes from. This is due to requiring input from both ears to pick up cues enabling detecting the direction sound comes from. Hearing in background noise is very difficult for those with SSD as information from both ears are required to separate the speech sounds from the background noise.

To assist those with SSD we offer wireless amplification known as a CROS system is one option. A CROS system routes the sound from the “poor” ear to the “good” ear. CROS systems which are well fitted may assist those with SSD in situations they struggle. If this system does not offer sufficient benefit our team can discuss bone-conduction options, which transfer sound through the bones in the skull from the poor ear to the good ear.

CROS II
CROS II