Aaron,
You sound like a smart kid, that has an idea what you want to do but you need help in choosing how to obtain your goals.
There are many paths that you can take within the Aviation field that may provide travel opportunities. One place that you can check out the vaious careers is on the FAA web site
http://www.faa.gov click on the Job Opportunities and then have it list all. Whether you live in the UK or US, this will give you an idea of the various aviation related careers.
You can also contact the various colleges and universities that have Aviation Degree courses, Purdue, Ohio State, University of Michigan, Emery Riddle, Beaver Falls, University of Minnesota, to name a few.
With your eyesight there may be options available to you, like LASIK, or PRK, check with a certified eye surgeon about whether you are a potential canidate. I know several controllers who had bad vision like you that under went LASIK and are now 20/20 or 20/30.
Good Luck,
Mike