Thank you for jumping in here harrychiling. I've read some of your earlier posts and it sounds like you know your stuff.

OK. I was able to follow you until you got to "So when the doctor measures for reading they will set and object lets say 30cm from the eyes and then put lenses in front of you until you can see a certain size text clearly. That power will usually range anywhere from +1.00 to +3.00 diopters."

Then you lost me.

One of my teachers once told me "Never accept an unclear answer." Maybe everyone else reading this is nodding and saying. "Okay, now I get it," but I guess I'm a little slow. You were talking about getting my eyes examined, then you were talking about contact lens manufactures. When does a "low" add become a "high" add? Is anything more than a +2 considered "high"?

Thank you for taking the time to explain this to someone as dense as me!