The American Medical Association (AMA) House of Delegates stated the following in its June 2001 "Report of the Council on Scientific Affairs," available on the AMA website:

“Although smoked marijuana reduces intraocular pressure, its clinical utility in glaucoma is compromised by its short duration of action and accompanying central side effects. Furthermore, the cardiovascular, pulmonary, and CNS [central nervous system] effects of marijuana are of great concern given that glaucoma is a chronic illness and a large number of patients are elderly. Additionally, the ability of marijuana or THC to protect the optic nerve has not been studied…

Neither smoked marijuana nor THC is a viable approach in the treatment of glaucoma, but research on their mechanism of action may be important in developing new agents that act in an additive or synergistic manner with currently available therapies.”

June 2001