well with 'mild deafness' you can get a hearing aid if you don't already have one...some of the new ones can barely been seen at all, and if your hair is long enough it will be covered up anyway.....
i lost 40% hearing after a head injury and i could work with it well enough.i also have met some that have been deaf 100% from birth,that is a bit harder to deal with but i have seen people cope very well with it anyway,so i consider myself very lucky it's only 40% loss.
IMO unless the hearing loss was work related it will be next to impossible to get,but who knows...also if you are young like I said,very unlikely .
i see on another post you were asking close to the same question and said something about co workers not talking to you..perhaps you may want to look for another job that you like better.many times people are just not happy in the job they have and just no longer want to go to it...I'd be checking out other jobs at this time and try something new when the right one comes along.
this may not be what you wanted to hear,but it's prob a more logical aproach to a situation you do not seem happy with.