Using a microscope, Fisher examined different types of tears and their forms. “Different types of tears” means the differing reasons why the tears were shed. Some of the categories that were examined were tears of grief, tears of joy, tears of laughter and onion tears. When the dried tears were compared under a microscope, the results were mesmerising, as well as incredibly varied. It appears that different kinds of tears have different shapes. It must be noted that, as Fisher admits herself, although the test was scientifically accurate, the way in which the tears dry is a huge variable.