Maybe interesting to you; I have a digital (indonesian language) copy of the medical requirements in indonesia on my laptop. I got it in 2009 and it might be slightly dated, but from what I know, it probably will still be the same. If you're interested, send me your email.
You can also try to look for an updated version. The DGCA of indonesia can be found here:
.:: Direktorat Jenderal Perhubungan Udara ::.
The document you're looking for is called CASR 67. I'm pretty sure it can be found on their website, but Google couldn't find it for me and plowing through all the indonesian websites is not much fun. (it stirs up bad memories for me.)
Best of luck!
p.s; I just noticed you're from Brussels; I've done the Lionair route via CAE but received a negative result on the medical after typerating etc. Reason: Eyes.
p.p.s: found it:
CASR 67