Contents
- Cannabis and eye health: initial observations
- The effect of cannabis on the body and visual functions
- Cannabis: medical use and prospects
Cannabis and eye health: initial observations
When discussing how cannabis affects vision, it is important to consider not only local changes in the eyes, but also the broader context—the effect of cannabis on the brain. It is through the nervous system that the perception of light, color, and contrast is formed. Marijuana use can cause temporary visual distortions: increased brightness, altered perception of distance, or slowed reaction to movement.
In addition, marijuana is often associated with redness and dryness of the eyes, which is related to vasodilation and changes in blood flow. These manifestations are part of a complex process in which smoking cannabis affects not only the respiratory system but also visual functions.
Ophthalmologists' interest in the topic of “marijuana and vision” is explained by the fact that cannabinoids can reduce intraocular pressure. This is why scientific publications often mention the combination of “cannabis and glaucoma,” discussing the possibility of using the plant as an adjunctive treatment for patients with this disease. However, the effect is temporary and requires further research.

The effect of cannabis on the body and visual functions
The effect of cannabis on vision is related not only to the eyes, but also to the overall reaction of the body. When marijuana is consumed, the active substances affect the nervous system, which affects visual functions and perception of the surrounding world.
The main manifestations can be divided into several categories:
- Changes in spatial perception
Some people experience temporary distortion of distances and sizes of objects. This can reduce concentration and slow down reaction times. - Effect on intraocular pressure
The relationship between cannabis and eye pressure is often discussed in ophthalmology. Patients with glaucoma experience a short-term decrease in pressure, but the effect is unstable and cannot replace full treatment. - Physiological consequences of smoking
The harm of smoking marijuana to the eyes lies not only in the effects of cannabinoids, but also in the negative impact of combustion products on the vessels and tissues of the eye. This can increase dryness and irritation. - Special situations — cannabis after sports
Some people use cannabis after exercise to relax. However, the combination of physical activity and the effects of cannabinoids can increase visual distortions, reduce concentration, and cause eye fatigue. Therefore, this practice requires caution and an understanding of the possible risks.
Thus, ophthalmology considers cannabis to be a factor that can temporarily affect visual function, but its use must be strictly controlled and scientifically justified.

Cannabis: medical use and prospects
Contemporary research increasingly considers cannabis as a source of potential therapeutic effects. In ophthalmology, the possibility of using cannabinoids to support patients with glaucoma and other visual impairments is being discussed. However, it is important to understand that the results are still inconclusive and require rigorous scientific confirmation.
In this context, the question arises: What is CBG? CBG (cannabigerol) is one of the rare cannabinoids being researched as a possible component for medical use. Unlike the more well-known THC and CBD, it does not have a pronounced psychoactive effect, but it may influence inflammatory processes and eye health.
| Cannabinoid | Key features | Possible effects on vision | Medical use |
| THC | Psychoactive, reduces intraocular pressure | Short-term improvement in glaucoma | Limited use, requires supervision |
| CBD | Anti-inflammatory, neuroprotective | May reduce inflammation of eye tissues | Investigated in chronic diseases |
| CBG | Non-psychoactive, rare cannabinoid | Potential effects on blood vessels and visual function | Considered a promising component in ophthalmology |
Thus, the medical use of cannabis in ophthalmology is associated not only with traditional cannabinoids, but also with new molecules such as CBG. Their study opens up prospects for the development of drugs that can support eye health without significant side effects.

Attention! Errors Seeds does not encourage you to grow cannabis and does not assist in any way with this activity. Growing cannabis is prohibited by Ukrainian law. This article is for scientific and informational purposes only.
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