Evidence supporting the use of: Marijuana
For the body system: Eyes

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Marijuana (cannabis) has been used both traditionally and scientifically to support eye health, particularly in relation to intraocular pressure (IOP), which is a crucial factor in the development and progression of glaucoma. The primary scientific basis for its use comes from studies conducted since the 1970s, which demonstrated that certain cannabinoids, especially delta-9-tetrahydrocannabinol (THC), can significantly lower IOP when administered either orally, intravenously, or through inhalation. These findings spurred interest in the potential for marijuana to serve as an adjunct or alternative to conventional glaucoma therapies.

However, the effect of marijuana on IOP is typically short-lived—lasting only 3-4 hours—necessitating frequent dosing to maintain therapeutic benefit. This frequency of use introduces concerns about side effects, including cognitive impairment, mood alteration, and cardiovascular effects. Additionally, the IOP-lowering effect is not always consistent across all individuals.

Major ophthalmology organizations, including the American Academy of Ophthalmology, do not recommend marijuana as a primary treatment for glaucoma due to these limitations and the availability of more effective, longer-lasting, and safer medications. Nevertheless, the scientific evidence supporting its short-term efficacy in lowering IOP does exist, which is why the evidence rating is moderate rather than low or absent.

More about Marijuana
More about Eyes

Other body systems supported by Marijuana

Brain
Digestive System
Dopamine
Eyes
Joints
Nerves
Stomach

Products containing Marijuana

We currently have no products on Vitabase that contain this ingredient.