Quote - make fonts large enough for my ancient eyes to see properly at the default resolution.  

Get glasses.

I had the optometrist tell me the approximate diopter for each eye then bought a bunch of cheap reading glasses at the drug store and swapped the lenses (.025 in my right and 1.25 left).  I have the expensive pair (bought through the optometry shop) for computer work and keep my cheapo glasses all over the house.  I have several in the garage for working on stuff and even tied a pair to the inside of my welding googles.