In a world where our eyes are called upon more than ever - computer screens, smartphones, artificial lighting, pollution - it's natural to want to give them a little boost. That's where eye supplements come in - capsules or tablets that promise to preserve our vision, slow down certain eye diseases and even improve visual comfort. But what does the science say? And above all, are they really worth taking?
What do eye supplements contain?
Most eye supplements contain a combination of antioxidants and nutrients beneficial to visual health, including:
- Lutein and zeaxanthin: two carotenoids found in high concentration in the retina, especially in the macula. They filter blue light and act as antioxidants.
- Vitamin C and vitamin E: powerful antioxidants that protect eye cells from oxidative damage.
- Zinc: a mineral essential to the proper functioning of the retina.
- Copper: often added to balance the effects of high-dose zinc.
- Omega-3 (DHA and EPA): useful for maintaining retinal health and relieving dry eyes.
When are they recommended? Ocular supplements are not a miracle solution, but they can be useful in specific cases:
Age-related macular degeneration (AMD)
Studies have shown that a particular blend of vitamins and minerals can slow the progression of AMD in people with intermediate to advanced stages of the disease. This blend includes lutein, zeaxanthin, vitamins C and E, zinc and copper.
Please note: these supplements do not prevent the onset of AMD in healthy people, but may slow its progression.
Dry eyes
Omega-3s can be beneficial in reducing the symptoms of dry eyes, especially in people who spend long hours in front of screens or in air-conditioned environments.
Nutritional deficiencies
People with diets low in fruit, vegetables, fish and other foods rich in essential nutrients can benefit from supplements to make up for these deficiencies.
Should I take them if I'm in good eye health?
If you're in good health and your diet is rich in fruits, leafy vegetables, fatty fish, nuts and whole grains, you're probably already getting the nutrients you need to keep your eyes healthy.
However, it can be difficult to achieve the precise doses recommended in the AREDS studies through diet alone. In some cases, a healthcare professional may recommend a supplement for prevention, especially if you have an increased genetic risk or a family history of AMD.
Things to keep in mind
- Consult an optometrist before starting a supplement. Some high-dose nutrients may interact with medications or cause side effects.
- Supplements are not a substitute for a balanced diet. They are a complement, not a solution.
- Choosing the right product is important. Not all eye supplements are created equal. Look for those that follow clinically studied formulas.
Eye supplements are worth taking in certain specific situations, such as AMD or chronic dry eye. For the general population, a nutrient-rich diet remains the best strategy for preserving eye health. As always, personalized advice from your optometrist is the best place to start.
