[stomachmonkey]

I figure it out when I could no longer read ****.

First tell is if you start moving things closer and farther away trying to find a focal point.

As far as power, go to the store and try on different ones.

You’ll fall between ranges anyway so grab the ones that bring things into Focus.

Don’t go too strong, the first set that works is it.

They are dirt cheap so if you want to grab the next strength as well won’t hurt to have.