Hi,
if you fail the Beynes-Test in Portugal, you can go to Germany Cologne, redo this test, and/or to London Gatwick and take the Beynes and Holmes Wright lantern test and/or go to Zurich take the spectrolux (I hope I spelled it wright) and/or to Amsterdam an take the Holmes Wright Test.
I failed (after the anomaloscope and Ishihara) in Cologne and London and I passed in Amsterdam. I failed the Holmes Wright in London by just one mistake, due to the fact that I was way to nervous. I was quite nervous in Amsterdam too, but I passed there.
Good luck with you Medical.
LH_Pilot