Glaucoma is one of the many diseases which can be treated with medical marijuana according to studies seeking to find out the medical value of cannabis. Glaucoma refers to an eye disorder that gradually causes degeneration of the optic nerve. This never transmits visual information from the eye to the brain. The underlying causes of glaucoma results from an elevated pressure in the eye, a condition commonly termed as intraocular pressure (IOP).  Glaucoma affects about 60 million people ...