I'm in the same boat. DQ'd in '14 for color vision and picked up on this recent board. My 2808 had the same stamp, "pending successful completion of MFS". When I hit the 90 day mark for my PCS and a TDY for MFS still hadn't been loaded I called medical standards Branch at Wright Patt. They said I didn't need to go to MFS, which was great news but my 2808 and orders (with the MFS PPC) said otherwise. Long story short they asked for a follow up appt with my local base optometry clinic and when they received the results a new SF600 was generated with updated comments from optometry. They told me to bring both sf600s to UPT since the old SF 600 had anthropomorphic and psyc comments, the new one had passing comments from Opthalmology.
Originally, I had the same mindset as TeafChief, but med standards wouldn't actually let me go. It took a lot of back and forth (and getting AETC involved) but now i have the proper documentation.
Hope this helps. Good luck at Vance