Improving your hearing ability depends on what is wrong with your hearing. Many Veterans suffer from hearing loss and/or Tinnitus due to their occupation (MOS). Guns, Artillery, and heavy equipment are bad for hearing, especially with protracted exposure. The Standards for Hearing Loss are listed in the 38 CFR and you need to be evaluated by a VA Audiologist to determine the cause, extent, and any treatment. This is provided at no cost to the Veteran if it is a Service Connected issue. If you have not already done so, register with the VA Healthcare System at your closest VA Facility. You will need to pra copy of your DD-214 for Registration. If you decide to file a Claim for Compensation, I suggest locating a VSO (Veteran Service Officer) in your area for assistance.