Understanding the cause of red eyes while high
The red, bloodshot eyes often associated with being high are not a result of smoke irritation, but rather a direct physiological effect of THC (tetrahydrocannabinol), the primary psychoactive compound in cannabis. When THC enters the bloodstream, it causes a temporary drop in blood pressure. This drop, in turn, leads to the dilation, or widening, of blood vessels and capillaries throughout the body, including the delicate ones in the eyes. As more blood flows through these expanded vessels, the whites of the eyes (sclera) take on a reddish tint. This effect occurs whether cannabis is smoked, vaped, or consumed in edibles, confirming that it is the THC, not the smoke, that is the main culprit. Other contributing factors can include dehydration and the drying effect THC can have on the eyes.
Immediate remedies for red eyes
For situations where you need a quick and noticeable reduction in redness, a few key strategies are available. These methods offer fast relief, though it's important to remember they only address the cosmetic issue and not the underlying intoxication.
- Over-the-Counter (OTC) Eye Drops: This is arguably the most effective and rapid solution. Look for eye drops specifically designed to reduce redness. These products contain vasoconstrictors, such as tetrahydrozoline, which work by constricting the dilated blood vessels in the eyes. Be sure to follow the package instructions and avoid overuse, which can lead to a rebound effect where redness worsens. For those with sensitive eyes or contact lenses, hydrating artificial tears can be a gentler option that addresses dryness and irritation.
- Cold Compress: If eye drops are not available, a cold compress is an excellent natural alternative. The cold temperature helps constrict the blood vessels, reducing blood flow and redness. To make a compress, soak a clean washcloth in cold water, wring it out, and place it over your closed eyes for about 5 to 10 minutes. For an extra cooling effect, chilled tea bags or refrigerated spoons can also be used.
- Splash Cold Water: A quick and easy solution is to simply splash cold water on your face and eyes. The cold temperature can help shock the capillaries into constricting and can make you feel more alert.
- Use Sunglasses: This is the ultimate, non-invasive method for immediate concealment. A pair of sunglasses can effectively hide any redness, puffiness, or pupil dilation. They also protect your light-sensitive eyes, which can be a side effect of cannabis use. This is an ideal solution for outdoor scenarios.
Longer-term and preventive strategies
While immediate fixes are helpful, incorporating longer-term habits can reduce the severity of red eyes over time.
- Stay Hydrated: Dehydration can exacerbate eye dryness and redness. Drinking plenty of water before, during, and after cannabis consumption helps maintain hydration and reduces the severity of red eyes. Opt for water over sugary or caffeinated beverages, which can have dehydrating effects.
- Choose Lower-THC Strains: If you are a medical or recreational user, selecting strains with a lower THC content is a preventative measure. Since THC is the compound that causes vasodilation, a lower concentration means a less pronounced effect on your eyes. Strains higher in CBD and lower in THC are often less likely to cause significant redness.
- Moderation is Key: Limiting your intake is a simple but effective way to control the intensity of all cannabis side effects, including red eyes. Higher doses of THC, whether from smoking or edibles, lead to more intense and longer-lasting redness.
- Get Enough Rest: Rest is crucial for overall eye health. If you are sleep-deprived, your eyes are more likely to appear tired and irritated, and cannabis use will only magnify these effects. A brief nap or closing your eyes for a few minutes can help them recover.
Comparison of Red Eye Relief Methods
| Method | Speed of Relief | Duration of Effect | Best for | Key Considerations |
|---|---|---|---|---|
| OTC Eye Drops | Very fast (minutes) | Varies (up to several hours) | Quick, noticeable relief | Avoid overuse; can cause rebound redness. |
| Cold Compress | Fast (5-10 minutes) | Temporary | Natural, non-chemical relief | Convenient, but effect wears off. |
| Hydration | Gradual | Sustained | Prevention and reduction | Requires consistent intake; takes time. |
| Sunglasses | Instant | As long as they are worn | Immediate concealment | Only masks the issue; not a remedy. |
| Lower THC Strains | Long-term | Preventative | Regular users who want to avoid redness | Requires planning; not an immediate fix. |
Additional tips for looking and feeling normal
Beyond just treating the eyes, a few other actions can help you project a more normal appearance:
- Freshen Up: Wash your face with cold water and use an air freshener or perfume to mask any lingering odors on your person or in the room.
- Practice Self-Awareness: Stay conscious of your demeanor. Avoid fidgeting or giggling excessively, and keep your movements smooth and measured to appear more composed.
- Eat and Hydrate: A snack can often help you feel more grounded. Consuming food and water will also combat dry mouth, another common effect.
Conclusion
Red eyes are a temporary and common side effect of cannabis use caused by THC's effect on blood pressure and eye capillaries. While the redness itself is harmless, a variety of strategies can help mitigate it. For the quickest fix, over-the-counter eye drops or a cold compress are your best bet. For immediate concealment, sunglasses are a tried-and-true method. For those who use cannabis regularly, staying well-hydrated and opting for lower-THC strains can reduce the frequency and intensity of red eyes. Remember, these remedies do not reverse the state of intoxication but can help you feel and appear more composed until the effects naturally subside. If you experience persistent eye redness or irritation even when not consuming cannabis, it may be a good idea to consult an eye care provider for a check-up.
