best to route to be a commercial airline pilot

Hi, just looking for some advice. I have always wanted to a be pilot for a
commercial airline but i'm not really sure of what the best route is. I have
heard airlines always look for someone who has a degree, I am currently in
my first year of computing but I could transfer to an Aviation with pilot
studies degree, where I also could obtain my PPL so do you think this degree
would give me an advantage? Also, where do you go from there? I have had a
look at some airlines website, most don't seem to offer a training scheme
except for EasyJet and Thomas Cook so how do people learn? One more
question, is their a specific prescription for eye sight, and could I wear
my specs for the eye tests for the medical certificates I would need? Im in
the UK if that makes any difference to anything.

Many thanks for any advice you can offer

Daniel