Sight Variations

I guess this is the right place...

Anyway, I have a question about the difference in sight between my contacts and glasses. Why the difference? With my contacts in, I can read all the words on the tv at a distance of about 12 ft. away with no problem whatsoever. Everything is crystal clear. However with my glasses at the same distance of 12 ft. Everything is insanely blurred.

Anyway like I said my question is qhy I can see better with my contacts than with my glasses, even if they are the same prescription.

I'm no expert by any means, but my first and most logical guess is since the contacts sit on the cornea or whatever, your eye can focus instantly and doesn't need time to adjust. Whereas with the glasses they sit a small distance off of your eyes and because of that distance you're sight roams all over and can't focus on everything since you see eevrything in the lens and outside, and it all gets blurred together.

If anyone has any information on this it would be greatly appreciated, along with saving my parents 50 bucks going to the doctor.