agree with boxtops always been tos mall independent. Now have varifocals, different prescription each eye. Never had a problem, never tried to sell me new frames always assumes will be reusing the ones I have. It's me that wants to change as fed up after 2 years of wearing same ones every day. Years ago husband went to High St chain, told him he needed glasses and very pushy on the frames. He wasn't happy, so cancelled under pretext of wanting second opinion on frames suiting him, and went to my optician. He told him very borderline and would probably need them in future but would not reccomend at that time. Now tells him to get reading glasses from pound shop as that is all he needs.