My prescription has an ADD number of +1.75 for each eye, which is perfect correction for a 12" distance. Suppose I want to change that - let's say I want an 8" distance, or a 16" distance.
Now, my logical mind says a correction for 8" would be +2.50 (or perhaps +2.75), while a 16" would be +1.25 to +1.50 How far off base am I? -=[ Grant ]=- --~--~---------~--~----~------------~-------~--~----~ Check us out at the oft-updated http://glassyeyes.blogspot.com! You received this message because you are subscribed to the Google Groups "GlassyEyes" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/glassyeyes?hl=en -~----------~----~----~----~------~----~------~--~---
