Update: Thanks for all the replies, I picked the glasses up today, they have a plastic frame but they're is no difference in my sight with them on like I've been trying to read car number plates from 20 metres and road signs from a distance but there's no difference, still look blurry. I called them and they said I need a few days to get used to them and call back if there's no change. I'm going to wear them while on my phone, laptop etc even though I don't need them for that but I was told to wear the, for screens and driving. Now I've got a new worry that it won't improve and I'll have to get a more thorough exam and there's a more serious problem.