Cannabis has been used to lower eye-pressure for at least half a century, since the first small-scale trials have been conducted on patients with glaucoma. The trials were successful, and high eye pressure was among the first indications for the legal use of medical marijuana in the United States and then elsewhere. THC seems to be the main ingredient in weed that relieves intraocular pressure. Other cannabinoids, including the non-psychoactive CBD, may be also helpful, but more research is needed. For now, if you want to decrease high eye pressure for a few hours, prepare for some mind-altering effects. However, it is worth it, as glaucoma is a serious condition, damaging the optic nerve and threatening permanent blindness. Among the best strains to relieve eye pressure in our list below, you’ll find every type of cannabis: Indicas, Sativas, and their hybrids.