Tesco don't have an opticians here, I feel as if I'm missing out.
I went to Vision Express for my first 2 pairs of glasses, but the lenses kept popping out and the leg broke on my first pair. So for my current pair (1st pair I have to wear all the time) I went to Specsavers. I love them, since I paid for them myself as an 18th birthday to myself. (Not as sad as you all think, ok?) I also got a free eye test and when I get tested again before I go to uni I'll make sure I'll have vouchers to get another free test.
Why pay for something if you desperately need it?