I've got my Nikon camera diopter adjusted to the maximum left and I need just one more tick or two to get a neat view.
After I consulted my ophthalmologist, he advised me to choose the minus (-2.0) one. But when I test it with him he got more confused :) — believe it or not. Does it need more minus in addition to the minus (cumulative), or is the correction is to decrease the values? by adding a plus value to decrease the error distance between the two values my eye prescription and the value it should be (in opposite to counteract that)?
So I need your advice. Please find attached eye medical receipt:
I want to make sure that I choose the correct one, please. Is it the minus or the plus?