I found this on this site http://www.itmonline.org/arts/cataracts.htm
but I couldn't find anything related to it's use on dogs.
A Swiss product called Quinax (dihydroazapentacen or azapentacene polysulfonate) is used as a treatment for cataracts. According to one research report from Poland (7): "An observation of (on average) 5 years duration showed that systematic application of the drug prevents the development of early senile cataract and distinctly slows down the progress of the condition in the group of patients without the risk factors. Non systematic application of the compound also slows down the progress of the condition in the group of early cataract. The drug was ineffective in patients with an advanced diabetic cataract."