PD, or Pupillary Distance, is the distance between the centre of your pupils. We need this measurement when we make your glasses, to ensure you are looking through the clearest part of the lens.
If you don’t have a copy of your PD measurement from your opticians, we have explained below how to measure it yourself. You will need a ruler and a mirror.
Looking for the perfect pair of sunglasses at an affordable price? We have got you covered.
Our M&S Sunglasses Collection offers over 40 different styles, in a variety of tint shades, from only £89 including single vision lenses.
To take advantage of the offer visit your nearest M&S Opticians store.