It's no secret that smoking cannabis can cause red eyes. Consumption is also sometimes noticed due to unusual dilation of the pupils. With cannabidiol (CBD), extracted from industrial hemp plants, the name given to legal cannabis, the question legitimately arises. Can CBD cause red eyes ? Beyond that and more generally, how does cbd interact with the eyes ? This is our topic of the day.
In this section:
Why do cannabis users have red eyes?
If we think of a stoner, there is a good chance that the cliché of the hippie with long hair and red eyes will appear at one time or another in our imagination. However, beyond the cliché, there is a proven risk of having red, swollen, or watery eyes among the side effects of cannabis. However, this phenomenon is primarily related to marijuana use, understand cannabis with a high THC content and therefore illegal.
A common assumption is to think that the red-eye phenomenon is caused by smoking and therefore smoking CBD (which is, remember, prohibited) or even vaping it could lead to the appearance of red-eye from its consumers. It is however not the smoke that is responsible.
If smokers have red or even glassy eyes, it is for the same reason that they sometimes also have dizziness. The culprit has a name: vasodilatation. In fact, when we consume cannabinoids, our endocannabinoid system (SEC) activates. However, ECS sensors are present throughout the body, including in the eyes. In case of consumption of THC, blood vessels dilate. Their enlargement increases blood flow in the affected areas, causing the redness typically seen in the eyeballs. Due to increased blood flow, blood pressure drops. This is what causes vertigo.
Moreover, these effects are attributable to the simple THC consumption. Opting for edible cannabis rather than smoking it therefore does not circumvent the problem.
Alright, so we're set on the fate of THC, but what about CBD?
Let's end the suspense: CBD does not count red eyes among its side effects currents. Unlike THC, CBD does not cause blood pressure to drop sharply after initially increasing it, causing redness in the eyes. Indeed, CBD has no no direct influence on the cognitive state of its user, except of course to relax it. Antagonist but nevertheless complementary to THC, CBD influences the way receptors bind to molecules, allowing certain neurotransmitters such as serotonin to circulate freely. This is what allows him tohelp consumers fight depression. No red eyes then, but virtuous effects (it is for example painkiller, anti-inflammatory and relaxing).
Thus, CBD not only does not cause eye irritation, but is also a effective and legal alternative to THC to take advantage of the properties of cannabis. It is also possible to limit the appearance of red eyes by drinking water, resting and possibly using eye drops.
Beyond red eyes, CBD could nevertheless have other eye effects, with some consumers indicating positive effects, for example in cases of glaucoma.
CBD for the eyes: opportunities and limits
Red eyes are an embarrassing phenomenon since it is neither very pleasant to bear nor discreet. Indeed, going out with red eyes is certainly synonymous with embarrassing questions about his possible use of illicit products. However, it is not a health hazard disorder. The eye pathologies are nevertheless numerous and more problematic. Since THC is a natural vasodilator, its interest has naturally given rise to numerous discussions as to the possible interest of taking cannabinoids for eye problems, especially in the case of glaucoma.
CBD and glaucoma
Le glaucoma is an eye disease commonly resulting in too much pressure inside the eye. Unsupported, it causes the progressive destruction of the optic nerve. Since marijuana has the ability to lower blood pressure, it was quickly considered to provide relief to people suffering from glaucoma. However, it remains illegal in France, including for therapeutic purposes. But what about CBD?
As we mentioned, CBD does not have the same properties as THC. That's why it's legal (it's non-psychoactive, non-addictive and does not causeSide effects major). This is also why it does not give red eyes. Finally, it is for this reason, unfortunately, that it does not seem not qualified to treat glaucoma. Worse, a press release from the American Academy of Ophthalmology recommended against using CBD as a natural treatment for CBD. The paper is based on a December 2018 study by researchers at Indiana University on mice. The conclusion is clear: a 18% increase in eye pressure was seen in mice treated with CBD-enriched drops.
This confirms that CBD is, in many ways, an antagonist of THC. Not only does it seem unable to cure glaucoma, but it could, in some cases, make your symptoms worse. In the event of an eye problem, it is therefore advisable to systematically consult a health professional, ideally a specialist in ophthalmology.