which eyepiece diopter for mx?

oops, made a mistake my glasses are -1.75 and -2, so I'm nearsighted. I asked Pentax NL this same question and they say I need the -1 diopter, so I guess the diopter of viewfinder and adapter do add up. BTW. the diopter lens and adapter come as two seperate products. anyone know if you can add an

which eyepiece diopter for mx?

Hi, I'm getting fed up with focussing with my glasses on so I want to get an eyepiece diopter for my MX. Which one do I need. I saw in the manual that the diopter of the finder is -0.6, my glasses are 1.75, so I get I need the -1 or the -2 diopter. So does the diopter on the eyepiece diopter add