I don't think close work changes an ageing process!
Kids who do much close work and don't play outdoors much have a greater incidence of short-sightedness.
Folk who don't do close work tend to get reading specs later, just because they have less need for them.
You WILL need reading specs, just like your hair WILL go grey (unless you die first).
Reading specs will make you feel MUCH more comfortable.
Get your eyes optimally corrected for close up, intermediate and distance and get them checked frequently.
Varifocals don't suit everyone and lack of vertical pitch for optimal correction can be troublesome if you have a large field of view.