I don't understand. Why, didn't the eye doctor, described, Karen's glasses to be worn all the time? ( Including reading and writing.) The blue pair was for reading and writing. The pink pair, was for everything else. I been wearing glasses, since I was 6 years old. I didn't need two pairs. One for reading and writing, the other pair for everything else. Over the years. I kept my old pair. When I got new pair of glasses. I don't know anyone, who needed two pairs of glasses, for different reason. If, I was Karen. I'll get tired of switching glasses, all the time.