Dr. Winterkorn - your responses have been very helpful and I thank you. I am, however, a little unclear about the scotchtape on the inside of the left eyeglass lens: why the left? is it because I mentioned that the left is my "bad" side? or is it because we drive on the right side of the road? should the tape cover the entire lens? or just a part? And a question on the reading problem: are you suggesting that the prisms are too strong, or rather that I should try to hold the book further away using the existing prism lens? These nit-picking questions come out of my great concern about the problems and the desire to use your advice properly and help myself in some way. Again, I am very grateful for your response. Nancy Shlaes deGrazia "Jacqueline Winterkorn, PhD, MD" wrote: > The questions about vision continue to come my way: > > [log in to unmask] (Nancy S. Shlaes) has intractable double vision at > times not helped by "strong prism." First, I hope you are not trying to > correct with bifocals, but are wearing separate distance and near glasses. > Second, if you are holding the book very near, you need even stronger prism > and even stronger correction for near. How about holding it a little farther > away. Third, at those times when the double is impossible to fuse, try a > piece of scotch-tape on the inside of the left eyeglass lens. You'll see > single, for sure, and it will be surprisingly comfortable. Finally, if you > blink several times, the "double" due to dry eyes will also resolve. > > Jacqueline Winterkorn, PhD, MD