Yes things do change with age...but I'm not a fan of doctors attributing changes to age. I am 82 and my worse problem is the BE with constant mucus clearing and a low count of MAI.
Did you and did your pulmonologist suggest that you have a baseline eye and hearing test before going on the antibiotics? If so, that will possibly give you good information with the eye exam you are thinking of having. Are you on Medicare? With my being on Medicare I have been able to make my appointments without going through my PCP or Pulmonologist. I make the appointments directly.
Barbara