You are in the same situation that I was in . Had good vision and never wore glasses. Then the print started to get smaller and close up started getting out of focus. Used glasses for reading only, then some distant stuff started to get blurry.
I now wear glasses all of the time. I have glasses that go from reading at the bottom to looking at distant at the top. All I have to do is move my head up or down until what I am looking at is in focus. They are not bifocals, or invisible line bifocals but they go gradually from one strength to the next.
Also as suggested get the coatings.
I think they're called progressive bifocals (see my post above). They take a little getting used to, but you do get used to them.