Glaucoma & Medical Cannabis

Glaucoma as a Qualifying Condition

Glaucoma is a group of eye conditions characterized by elevated intraocular pressure (IOP) that can damage the optic nerve and lead to irreversible vision loss. It is one of the leading causes of blindness worldwide and is most common in adults over 60.

Cannabis was one of the earliest studied potential treatments for glaucoma — research dating to the 1970s demonstrated that THC can lower intraocular pressure. While ophthalmologists typically prioritize proven eye drops and surgery, some patients use medical cannabis alongside them. It lowers eye pressure for only 3–4 hours, so it is not a replacement for drops, and eye doctors' professional groups do not recommend it as a glaucoma treatment.

Cannabis and Intraocular Pressure

THC has demonstrated IOP-lowering effects in multiple studies, reducing pressure by 25–30% for approximately 3–4 hours per dose. The relatively short duration of effect means that consistent IOP control requires frequent dosing, which should be considered alongside your existing glaucoma management plan.

Your provider at PremierMD will coordinate with your ophthalmologist and will only recommend cannabis therapy if it complements your overall glaucoma management strategy. We do not recommend cannabis as a sole treatment for glaucoma.