Medical cannabis for glaucoma — patient guide in Puerto Rico

Why it may help

Glaucoma involves elevated pressure inside the eye (intraocular pressure) that can gradually damage the optic nerve. The eye contains components of the endocannabinoid system, including CB1 receptors in tissues that regulate fluid drainage and pressure, such as the ciliary body and trabecular meshwork. Researchers believe cannabinoids like THC may interact with these receptors to influence how aqueous fluid is produced and drained, which is the pathway through which cannabis has been observed to temporarily lower eye pressure.

How patients use it

The main effect patients pursue is a reduction in intraocular pressure, since lowering eye pressure is the central goal of glaucoma management. Research suggests that cannabis may lower eye pressure, but the effect appears to be short-lived, generally lasting only a few hours, which would require very frequent dosing to maintain. Because of this short duration and the side effects of repeated dosing, leading ophthalmology organizations do not currently recommend cannabis as a substitute for established glaucoma treatments.

Strength of the evidence

The evidence for cannabis in glaucoma is limited: while studies have shown it can briefly lower intraocular pressure, the effect is too short-lasting to make it a practical or recommended treatment compared with standard therapies.

Educational information grounded in established pharmacology and public sources. Not medical advice or a guarantee of results — treatment decisions are made with a licensed physician.

From the shelf

Where to start on the menu

Patients here usually stay on their eye-doctor's treatment; those exploring general comfort often start with our Wellness and Relax shelves.

These are navigational suggestions by effect, not medical directions. What you feel depends on a product's chemistry and your body — talk with your physician and our staff.