I have bifocals I made just for bicycling. I set them up so that the bifocal was just right for the distance to my cycle computer. Instead of going back to the optometrist to get a bifocal prescription with the right parameters I simply Photoshopped the prescription to say what I wanted it to say. I also worked with the glasses place to get the placement of the bifocal so that it works well for the bicycle computer but doesn't get in the way of my "road" vision. I've been very happy with them.