I don't really know about types of lenses - I really left that choice to the surgeon. But the results are amazing, I had the right one done a month ago, and will soon have the left done before Xmas. It will cost be ?5000 in all, being over here you can get it free but that means waiting for how long I don't know, and at my age every bit of time counts. Well worth it though, I thought just the gradual dimness would go but was amazed at the huge improvement in brightness and clarity.