I am a federal employee (24 yrs) and was diagnosed w/ PD 7 yrs ago. I am now 57 yrs old and would like to retire while I can still enjoy life. I am functional as long as I take my Sinemet/Pramipexole every 2.5 hrs, otherwise I cannot type or do any kind of lab work or do any presentations. So what is the criteria for disability retirement? If I refuse to take my meds, would I be eligible? Do I have to wait till I'm so bad off, that I won't be able to enjoy retirement?