Introduction
With the intensive use of screens, bad nights’ sleep and increasingly dry environments (especially with air conditioning and pollution), it’s only natural that eye health is becoming a growing concern for many people. The feeling of tired, dry or irritated eyes is increasingly common – and with it comes the search for natural solutions to relieve the discomfort.
Among these solutions, CBD (cannabidiol) has gained prominence thanks to its anti-inflammatory, calming and antioxidant properties. But can CBD really benefit eye health? In this article, we explore what is known so far about this link.
What CBD is and how it works in the body
CBD is a non-psychoactive compound extracted from the cannabis plant. Unlike THC, CBD does not cause euphoria or addiction, and is legal in many countries when it complies with THC limits (<0.2% in the case of Portugal).
This compound interacts with the endocannabinoid system (ESA)present throughout the human body – including the eyes. The ESA regulates various functions, such as mood, sleep, inflammation, pain and even intraocular pressure, which raises the hypothesis that CBD may play a role in eye health.
CBD and glaucoma: a controversial relationship
Glaucoma is an eye disease that causes an increase in intraocular pressure, progressively damaging the optic nerve. It is one of the main causes of irreversible blindness in the world.
Although cannabis has been studied as a possible adjuvant in the treatment of glaucoma, the results are mixed – and in the specific case of CBD, there is reason for caution. Some studies indicate that CBD can slightly increase intraocular pressure, which can be harmful for people with glaucoma.
Therefore, CBD alone should not be used as a treatment for glaucoma. In these cases, it is essential to follow the therapeutic plan prescribed by the ophthalmologist.
CBD and eye inflammation: is there potential?
CBD’s anti-inflammatory and antioxidant properties are well documented, and there are laboratory studies showing that cannabidiol can reduce inflammatory markers in eye tissue.
This suggests that CBD may have applications in cases of:
- Mild eye inflammation;
- Seasonal allergies affecting the eyes;
- Red or irritated eyes due to exposure to pollution or dry environments.
However, most studies have been carried out on animals or cell models, and there is a lack of human clinical trials to validate these effects in practice.
CBD for eyestrain and dry eyes?
We spend hours in front of screens and often don’t get enough sleep. The result is a combination of eyestrain, dry eyes and a feeling of heaviness in the eyelids.
Although CBD does not act directly on the eyes like eye drops, it can indirectly contribute to relieving these symptoms:
- Reducing stress and anxiety, which contribute to eye and muscle tension;
- Improved sleep quality, essential for cell regeneration, including the eyes;
- Muscle-relaxing action, which can relieve tension around the eyes and face.
For those who experience tired eyes after long periods working at the computer, CBD can be a natural way to relieve general discomfort.
How to use CBD with a focus on eye well-being
The safest and most recommended forms for use with systemic benefits include:
- CBD sublingual oil: rapid absorption and general effect on the body.
- CBD capsules or gummies: a practical option for regular use, especially before bed.
- CBD infusions: promote relaxation at the end of the day.
- CBD balms: can be applied to the temples or neck area to relieve muscle tension associated with eyestrain.
All these formats can help to create a comprehensive care routine, benefiting not only the eyes but also the emotional state and rest.
Limitations of science and precautions to be taken
Despite the growing interest, it’s important to stress that research into CBD and eye health is still at a very early stage. The results are promising, but not yet conclusive.
That’s why:
- CBD should not replace medical consultations or eye treatments.
- In cases of diagnosed eye diseases (glaucoma, macular degeneration, chronic conjunctivitis), it is essential to talk to a doctor before using CBD.
- Always choose products with laboratory certification to ensure that the CBD and THC content is correct and that there are no contaminants.
Conclusion
CBD is a versatile compound with multiple recognized benefits for physical and mental balance. When it comes to eye health, there are positive signs, especially in relieving indirect symptoms such as stress, muscle tension and poor sleep quality.
However, it is essential to maintain realistic expectations: science is still studying the true effects of CBD on the eyes. For now, the safest thing is to use it as a support for general well-being, and never as a substitute for medical eye care.
If you want to take better care of your eyes and your health in general, CBD can be an excellent addition to your routine – as long as you choose with awareness and quality.