A team of Scottish researchers is developing a hearing aid system that can read lips as well as amplify sound. Their goal is to develop a system that can work effectively in busy or noisy environments by creating a 360-degree approach that is more consistent with normal hearing.
The device, developed by a multidisciplinary team at the University of Stirling, incorporates a tiny camera that can lip read and process information in real time. According to a Stirling press release, the device can fuse the auditory and visual information, or it can switch back and forth.

Read more here: http://www.meddeviceonline.com/doc/a-hearing-aid-that-can-see-0001