I'm not sure Iolla is the right place to go for varifocals. It is so important to get the phasing right for the lenses so that the wearer can see to use a computer but also to drive. I have to crick my neck up to access the right part of the lens to see my computer screen and that isn't workable. The measurements for that element were taken by the shop assistant. The process did feel a bit scant and rushed compared to opticians I have used before. I will have to buy new glasses from Browns to ensure I get glasses I can use for work so unfortunately, for me, this has been an expensive mistake.