Acoustic neuroma is a condition that can cause hearing loss in one ear. A benign, or noncancerous, tumor grows on the main nerve that carries signals from the inner ear to the brain.

Hearing loss in one ear can make it hard to:

• Understand speech when there is a lot of background noise.
• Identify the direction a sound is coming from.

A cochlear implant after acoustic neuroma surgery can:

• Be placed when the cochlear nerve is still intact and working.
• Be a good solution for hearing that has been lost due to damage to the hair cells.
• Help you keep your hearing or restore it.