Welcome to the forums!
We're probably of similar vintage, you and I, but if you stopped building models around 1999 or 2000, I don't think you'll find too much has changed. I noticed more changes in my case--I went off to college in 1982 and stopped building models at that point, and didn't get back in until about 1990 or so. The explosion in the use of aftermarket parts, and the general disappearance of figures from aircraft and armor kits, was the biggest surprise to me.
As for your eyes, I recommend getting a magnifier of some kind, such as an OptiVisor, and having good lighting in your work area.
I look forward to seeing your builds!
Best regards,
Brad
Oh, and, Happy Australia Day!