I'm reading my laptop with my chin in the air at the moment, as the woman in the Optician persuaded me that it was silly to have 3 pairs when one pair of varifocals would do it all.
She didn't tell me about the need to waggle the head to bring things into focus, and the way most things seem blurred. They saved that info for this afternoon, when I collected them.
Then a different employee said, if you read a lot you might be best to use reading glasses for that.
Grrrr ... it was only the reading glasses that needed changing.
So now I've got 4 pairs.
How long does it take to get used to it?