The phenomenon of red eyes


Red eyes, and avoiding eye contact – a telltale giveaway that you’ve smoked cannabis.

While certain individuals will always experience red eyes, there are those who seem to be less sensitive to the occurrence of this symptom – red eyes may come and go, depending on the quantity or quality of the cannabis they consume.

To help you better understand the phenomenon of red eyes, we’ve wanted to give you better insight into what causes red eyes when consuming cannabis, and ultimately, what can you do to get rid of red eyes the next time you partake in a joint.


What causes red eyes when consuming cannabis?


Funny enough, the primary cause of your eyes going red after consuming cannabis is also the main reason why the plant is revered for treating glaucoma.

Cliff notes – When you get THC in your system, your blood pressure will go down, which in turn cause your blood vessels and capillaries to dilate.

And when your ocular blood vessels dilate, the flow of blood that travels to your eyes increases – causing redness in your eyes.

To put this into perspective – the more THC you get in your system, the blotted your eyes will be.

All of this still applies, no matter the way you are consuming the herb. Eat an edible, dab it, vape it – it’s not the smoke that causes your eyes to be red, but the cannabinoids.

How to Get Rid of Red Eyes from Cannabis

While the occurrence of red eyes is harmless reaction, it doesn’t make it a welcome reaction at all.

There are a few things you can do to minimize, or reduce the redness of your eyes after consuming the herb.

  • Choose low, or no THC strains – remember, the higher the THC content, the redder your eyes will be.
  • Have eye drops on hand, especially brands specially formulated to reduce eye redness.
  • Stay hydrated by drinking plenty of water. Increasing your fluid intake may help alleviate the dryness you experience.
  • Simply let it run its course and plan smoke sessions for leisurely moments spent at home. Ultimately, red eyes are not harmful and come with no negative outcomes.


There you have it, folks. We hope we’ve done our best to explain the phenomenon of red eyes after partaking in the herb, and we hope you’ve learned a thing or two.
So, the next time you want to whip out your herb grinder, roll one, and smoke it – all before going to work, get a strain that’s low in THC, and have those life saving eye-drops on hand!
And as always, if someone asks you what’s wrong with your eyes, or give you a hard time about it – just tell them it’s for your glaucoma!