Introduction to Anthocyanins
Anthocyanins are natural pigments found in many fruits and vegetables that give them their vibrant colors. They are particularly abundant in berries such as blueberries, blackberries and raspberries. These compounds are not only known for their antioxidant properties, but also offer numerous health benefits, especially for eye health.
Mechanisms and bioavailability
Although the bioavailability of anthocyanins in the body is relatively low, they enter the bloodstream in intact form and as various metabolites. Crucially, anthocyanins can penetrate the blood-eye barrier and the blood-retinal barrier. This allows them to have a direct impact on eye health.
Relaxation of the ciliary muscle
In vitro studies have shown that anthocyanins have a relaxing effect on the ciliary muscle. This is particularly important for the treatment of myopia (nearsightedness) and glaucoma. By relaxing the ciliary muscle, anthocyanins can help reduce intraocular pressure and thus alleviate the symptoms of these eye diseases.
Rhodopsin regeneration
Another significant benefit of anthocyanins is their ability to promote the regeneration of rhodopsin. Rhodopsin is a light-sensitive pigment in the rod cells of the retina that is essential for vision in low light. Studies on frog eyes have shown that anthocyanins can stimulate rhodopsin regeneration in the rod outer segment, improving the eyes' adaptation to darkness.
Prevention of myopia progression
In experimental models, such as the negative lens-induced myopia model in chicks, anthocyanins have been shown to inhibit axial longitudinal growth and eyeball lengthening, suggesting that anthocyanins may play a protective role in the progression of myopia.
Clinical studies and application
Clinical studies have shown that anthocyanin intake improves dark adaptation and causes a temporary shift in myopia. In addition, an improvement in retinal blood circulation has been observed in patients with normal tension glaucoma, further highlighting the potential benefits of anthocyanins for eye health.
Conclusion
The comprehensive health benefits of anthocyanins, especially their positive effects on eye health, make them a valuable part of a balanced diet. By incorporating anthocyanin-rich foods like blueberries, blackberries and cherries into your daily diet, you can help maintain and improve your vision health.
credentials
- Nomi et al., 2019: Therapeutic Effects of Anthocyanins for Vision and Eye Health. Molecules 24(3311):1-18. View study
Anthocyanins and Eye Health: More Resources
Learn more about the health benefits of anthocyanins and how to improve your eye health now! Here are two more blogs that offer in-depth information and interesting insights:
- Anthocyanins and Eye Health: New Insights : A detailed blog on the distribution of anthocyanins in eye tissues and their health benefits.
- Nyctalopia and the Power of Anthocyanins : This post explains the importance of anthocyanins in supporting vision health and offers valuable tips for incorporating these compounds into your diet.
Find out now and strengthen your eyesight!
