Re the eyesight thing. I thought opticians were obliged to inform DVLA of any failures to meet the driving standards. This I suppose depends on those being tested telling the truth about their licence status. Certainly I have to declare that my eyesight is up to standard on my 3 year licence application. It is and I am aiming for a cataract op to make sure it stays that way. I am well over the biblical span but IMO am perfectly capable still and would give up if I thought I was not. Mind you where I live I would be as well as dead anyway if that happened since I live at the top of a steep hill which I can cycle up unemcumbered but with shopping it would be a different matter. Testing would not be a simple matter and would entail much more expense and inconvenience than you townies would have. Retesting as routine is a kneejerk option not given much thought as to the practicality.