Ginny has a case of double vision-seeing two of everything. She realizes there isn't really two of everything but which things are real and which are not? Poor Ginny crashes into chairs and sees double the number of bunny ears when she tries to cut them out. When school vision testing day arrives, a kind nurse explains double vision to Ginny and tells her she will need to visit an eye doctor. The doctor gives her an eye patch to help strengthen her eyes and she becomes the Pirate of Kindergarten. 
 I really like this book because I can relate to it. Most people with "normal" vision rarely understand what a person with vison problems experiences. It is embarassing crashing into chairs like poor Ginny.