When your brain is deprived of sound stimulation, it loses the ability to process sounds. The longer you wait the more sounds disappear and it takes more time to readapt.
You get your vision tested regularly but what about your hearing? It is recommended to get a routine screening every 10 years until the age of 50 and at least every 3 years after turning 50. A hearing test can tell you if you have a hearing loss and a hearing care professional can advise you on what you can do about it.