Multi-Focal Contact Lens help needed!?

Hi there - I am using Multi Focal contact lenses - trying to determine how to get the best possible NEAR vision.. uming I just use my left eye (since I have mono vision), if I have a stronger "distance" rx, does that take away from the "high add" that I am given? So, would an rx of +.50 with a high add (for near/reading) take some of the "near" vision away, and therefore an rx of +.25 with a high add be BETTER for the near/reading part? My goal is to have the best NEAR/READING vision than I can have, as I wear my gles for driving and other times I need distance istance. Thank you in advance for all of your help.