Hi - I'm 71 and have worn bifocals since I was 40. My right eye is in a much worse state than my left. I have been using Specsavers for about 7 years since Boots (ie Dollond and Aitchison) priced themselves out of the market. I like their service and its very competitive. I believe that jewellers and opticians have the highest mark-ups on the high street. Caveat emptor.