Is it normal to have a very shallow depth of field with my new glasses that are meant for the computer and reading? I have always bought 1.75, cheap reading glasses which have served my purposes adequately. (My vision for distance is 20/20.) But these new prescription glasses require me to hold my head at an exact distance and angle to be able to read clearly...with one eye only. To make it clear for the other eye, I have to back away about 8 inches...then of course it is not clear for the first eye. The depth of field is so shallow that I have to work at finding THE exact distance. one mm forward, backward, up or down to get one eye clear. I was told that my eyes will adapt. Does this make sense? I think they are adapting in that I am reading out of one eye basically. Can an optometrist help?