Had my eyes tested, bifocal was recommended, although I insisted that using these glasses I have to keep bending my neck, and my jobs require me to look ahead and down. I decided to give it a try after being reassured that they could be returned within 30 days. I tried them but was having massive headaches, returned them with 30 days, was told at the Arndale branch that they cannot change them. After pleading with them, their supervisor told them to only change one of the glasses. So I have a pair of glasses at home gathering dust, because I cannot use them...there goes my hard earned cash. After so many years with Specsavers.