So you did your Groundschool at a UK ATO, and yet you opted to write the exams in Poland, having tried the Greek route?
A modular student ? If so, you required to be a holder of a PPL prior to ATPL studies and therefore held a Class Two medical?
Did the issuing AME not mention that your eyesight might be an issue?
I assume that you talked to the doctor about your aspirations to be a professional pilot?
I am trying to join up the dots but without success.......
Get your GP to refer you to a Consultant preferably who has had dealings with the CAA.