Rose-Lynn Fisher photographed tears of grief, joy, laughter and irritation. They are all different in microstructure! Above tears of 'timeless reunion'. Check out her website for more infromation and pictures for different kinds of tears.
In a very different way Marlene Dumas " tears-paintings" are very very moving. To be seen in the Stedelijk Museum Amsterdam in the Marlene Dumas exhinition The Image as Burden. The pictures below are details from For Whom the Bell Tolls (2008) and her painting of Anna Magnani in Mama Roma (2012) taken in the Stedelijk.