I'm 47 too. My "doo dad" is a pin-hole aperture on my safety glasses. It changes the depth of field so I can see the target, front post and back blade. Works with or without my corrective lenses. A must for competition bullseye matches. The laser pointer helps rapid placement when you don't have enough time to line up the sights with you eyes. The Crimson Trace products are pretty good. The LaserMax guide rod replacements are pricey at $329. Still, that is a great place to install a pointer.
Actually i thought of them first. Too bad they don't yet make a model for the Sig P245. ~SIGH~
That "Pin Hole" product would work great, but I'm afraid that my IDPA club wouldn't let me use it at a match on the grounds that I couldn't just wear it on the street all the time and of course, they're correct.