Presbyopia is a common vision problem that starts to hit people around age 40. Basically, I'm near sighted, have perfect close vision, but when I'm wearing distance glasses or contacts, my close vision is disrupted. You can lift your glasses to look at your watch, or even more inconvenient, put on readers on top of the contact lenses. Sorta kills the enjoyment of doing a quick glance at the watch to get info. I suppose I'll be using the largest text options.