John, I assumed you are near-sighted as I am.  An aperture helps me but I'm not sure if an aperture helps far-sighted folks like butlersrangers.  Also, you could make a temporary aperture (or diopter) by punching about a 1/16" dia hole in a piece of black electrical tape and sticking it on your lens.  I think I tried it once and had some good results, though the material that the hole is in should ideally be a bit thicker.
Don't forget to remove the tape before driving home.  I've found that diopters do not enhance my driving skills.