Most people know that vitamin A is important for health. But what is often overlooked is why. Among other things, vitamin A plays a role in the health of our eyes. So this vitamin is certainly not unimportant!
But how exactly does it work? The experts at VitaminFit have investigated this for you:
In this article, you will learn
- What vitamin A is and how it works
- The role of vitamin A in your eyes
- How vitamin A can prevent night blindness
- How to support your eye health with vitamin A
- Tips for a varied diet with vitamin A
What is vitamin A and how does it work?
Vitamin A, often in the form of retinol or beta-carotene, regulates various functions in the body, such as the eyes. The vitamin ensures that we maintain our vision, especially when there is little light in the evening and at night.
The biochemistry of vision
The retina contains a protein called rhodopsin, which is essential for our ability to see in low-light conditions. Rhodopsin consists of retinal, a form of vitamin A.
When light reaches the retina, retinal changes shape. This causes a number of chemical reactions, which generate an electrical signal. This signal is then sent by the optic nerve to the brain, allowing us to perceive images.
The link between vitamin A and eye health
Prevention of night blindness
One of the most well-known consequences of vitamin A deficiency is night blindness, which impairs our ability to see in the dark. Sufficient vitamin A ensures that rhodopsin levels are maintained. And you guessed it: this prevents night blindness!
Supporting overall eye health
Vitamin A contributes to:
- protecting the surface of the eye (cornea)
- reducing the risk of age-related vision loss
- preventing dry eyes by supporting tear production
Time for action:
- Eat a varied diet: Ensure a rich intake of vitamin A through a diverse diet of both animal and plant sources.
- Be aware of the Recommended Daily Allowance (RDA) of vitamin A. Too much vitamin A can actually be detrimental!
