Prosthesis replacement

Hi All
I had a mastectomy two years ago and got a form from the breast nurse for a prosthesesis and bra to take to a surgical bra shop, all free of charge.
I believe even if you are not a medical card holder you can get an allowance towards a replacement prostheseis and bra.
But how do you go about getting this? Is it at the breast clinic or is there a specialised department within the HSE that deals with it?
Thanks for your help.