Glaucoma is a state of increased intraocular pressure here is a flow chart of drugs used to treat glaucoma.
How about Cannabis? My late Grandmother swore by it after I gave her some back in the day.
Marijuana can create a 25 percent IOP reduction in 60 to 65 percent of people with or without glaucoma. What exactly causes this within the drug is unknown. The problem is that IOP reduction lasts from 3 to 3.5 hours.