Yes, people who have profound hearing loss can use hearing aids (but will need to work with an audiologist) and may also be good candidates for cochlear implants. Additionally, those who have single-sided deafness can use CROS and BiCROS hearing aids. These devices receive sound through one hearing aid but process that sound to manufacture the sensation of hearing in both ears. Sound signals are then sent to the unaidable ear where a specialized hearing aid is worn. Read more about how CROS and BiCROS hearing aids work in this article from Starkey.