I have varifocals, following advice from a fellow pilot who was also a very good optician. I had used glasses to correct short sight since my teens. He said that if I had varifocals as soon as I needed a different prescription for near objects, I would probably get used to them without a problem. People who started with bifocals and tried v. later more commonly had problems.
I have had v. ever since.
I used to have the best quality Zeiss lenses that I could get.
There is now another type, for which it is claimed that they have a larger area of sharp vision and I now have those.
(All this is about to change as I have a cataract operation tomorrow. If successful, that will give me good distance vision without correction. I will need to take advice about what to do for near vision, but I suspect it will still be the new type of varifocal.)
Chris N