CASA licenses
 

Hi I live in the uk and my one and only dream is to become an airline pilot!

However I could not pass the JAA medical standards because my refractive error is over +5 I understand in Australia under CASA regulations there is NO refractive limit.

Could I...

Do my training In Australia and get my CASA liecsnse with a CASA class one medical from say a uk examiner then once I have both of those then apply for a job say at emirates who accept both CASA/JAA/FAA licenses under a cadet program? Or another airline such as Cathay pacific or Singapore?

This is all I wanted to do in my life any help would be appreciated ! Thanks !

It's not that simple. Despite often recognising another licence for conversion, each country has its own medical standards and it is surprising how much variation there is in the application of those. ICAO may set minimum standards, but sovereign states are free to go as far above those minimums as they choose. Read the horror stories on other threads here about China, where you would expect the standard to be basic ICAO. Apparently it is ridiculously high - for expats anyway.

Before spending your hard-earned on flying, my advice is to take the ATPL medical in the country where you expect to be working. Not the PPL medical - the full, initial ATPL. Remember you will have to do a medical every six or 12 months for the rest of your career, so it is better to find out now whether you will encounter problems.

Could I...yes you can for what you specifically ask.
Do the Australian Class 1 medical in UK, from someone authorised
however as has been pointed out you cannot then 'convert medicals' per say.
To save a little time, give the Doc a call, explain your situation and find out who to go to for the Ophthalmic report so you have that already when going for the actual medical.
Yes, do check the intended airlines that are your goal, some have their own requirements that can be higher than a licence medical.
Also strongly suggest you have a backup plan, sounds like you could be with few options if you don't get in a cadet scheme.
I believe the eye limitation for JAA initial medical issue is +2. Have you considered laser surgery? Also talk to the UKCAA medical unit, I believe should you return with sufficient flight hours experience that +2 might be a little bit bendable...