this is a mistake. Get 3 or 4 pairs. Carry one in your shirt pocket, and leave the others in every room of the house,and at work.
And don’t go to expensive optomatrists—the rack at the local drug store has good reading glasses for $15.
Use the glasses when you find the need, (usually for close up stuff and reading small print)
Just do what is comfortable—if you can read the computer screen easily, take the glasses off or tilt your head a bit and look over the top. If you move your chair slightly, you may suddenly find the computer screen is more difficult to read–so put the glasses back on, or tilt your head to read through the lenses.
There are no “rules” about when to read through the lenses…–just do whatever feels more comfortable at the moment. Put the glasses on, or remove them , whenever you want to.
Dont worry about it!!!
Just get used to constantly putting the glasses on your nose, taking them off and putting them back in your shirt pocket, then pulling them out of the pocket, then putting them back on your nose, then taking them off and laying them down on the table, then deciding that instead of using the glasses, it’s easier to move the chair a bit farther from the computer or hold the book farther away, so you push the glasses up over the top of your head, then you forget they’re up there, so you look for them in your empty shirt pocket, then look for them again, on on the table where you laid them down earlier, then stand up and go to the other room to find the spare pair that you think you left on the top of the TV yesterday, then realize that the glasses are on your head already, so you may as well read through the lenses, except that the print on this page is big enough that you don’t really need to , so you put glasses back in your shirt pocket, then you turn the page and there is a diagram with smaller print, so put the glasses back on your nose,etc, etc.
Eventually, you will get used to treating your glasses like your wallet, always nearby.
But in the meantime, treat 'em the way kids treat their toys—use 'em when you get the urge, then drop them off and forget about 'em till the next time you want to use them.