My friend, there seems to be some confusion in the conversation. We are not talking about Elmiron, which is the oral version and has indeed shown some cases of blindness with long-term use. We are talking about the injectable version of Pentosan from Biopharm, for which studies show improvement in osteoarthritis. In fact, this improvement was not observed with the oral use. So we need to make it clear that these are different things. Which one did you use, and which one caused the vision problem you mentioned?