Here is some info about a lady named Elvie Musika, who lost the sight in one eye due to glaucoma, took the feds to court and won the right to use MJ as for medicinal purposes. The feds actually mail her medicinal MJ to her to this day. As she still has the sight in one eye after using the MJ as medicine, and lost the sight in one eye before using it as medicine, few can argue with the results. But some will, I'm sure.
7 to 9 AM on "The Morning Show" with Jon Beaupre
12-12:30 Live with Elvie Musika, one of 5 people in the U.S. who smokes marijuana legally, and who is provided the medicine by the federal government. Her eyesight was saved by marijuana. She gives an update on the state of California Proposition 215 in which the voters decided to legalize marijuana for medical use in the state. (of course we all know that it has always been legal, having been grandfathered in as a prior used medicine and that the federal government has always been acting illegally in trying to stop it.
Link: http://old.kpfk.org/upcoming_arc20020211.html
That sounds like the start of a medical trial.... It might be time to start a full fledged trial.