A healthy diet supports the whole person
Good nutrition supports general health and may help lower the risk of conditions that can affect the eyes, including diabetes and cardiovascular disease. Food is not a replacement for eye examinations, and no diet can guarantee that you will avoid glaucoma, cataracts, or macular degeneration. Still, eating patterns that support metabolic and vascular health are sensible foundations for long-term wellness.
What foods are worth putting on your plate?
A varied pattern that includes leafy green vegetables, colorful produce, whole grains, legumes, nuts, and appropriate protein sources can provide nutrients important to normal retinal function. Spinach and kale contain lutein and zeaxanthin, pigments found in the macula. Oily fish such as salmon, sardines, and trout provide omega-3 fatty acids, while plant-based options can support a balanced diet. Together, these nutrient-rich foods can support overall eye and cardiovascular health.
What does the research say about AREDS2?
The National Eye Institute’s Age-Related Eye Disease Studies showed that a specific high-dose vitamin and mineral combination can reduce the risk of progression to advanced age-related macular degeneration (AMD) in eligible patients, particularly those with intermediate AMD. AREDS2 is not a general-purpose eye vitamin for everyone and has not been shown to prevent AMD from starting. It is also not a proven treatment for glaucoma or a substitute for cataract surgery.
Why supplements deserve a medical conversation
AREDS2 includes substantial doses of specific nutrients, including vitamin C, vitamin E, zinc, copper, lutein, and zeaxanthin. Supplements may interact with medications or create side effects. Current and former smokers should avoid older AREDS formulations containing beta-carotene, which was linked to increased lung cancer risk. Patients should discuss a diagnosis and supplement choice with their treating eye specialist before starting therapy.
Omega-3 Fatty Acids: Potential Benefits for Dry Eye
Omega-3 fatty acids, particularly EPA and DHA found in oily fish, have anti-inflammatory properties and may help support the tear film. Clinical studies have found that some people with dry eye disease experience less irritation, better tear stability, and improved measures of tear production when taking omega-3 supplements. Reviews combining multiple studies suggest omega-3s can be a helpful addition to dry eye management. Because results have varied between trials, including one large study that found no advantage over placebo, benefits may differ from patient to patient. Omega-3s can be considered alongside established treatments such as artificial tears, eyelid care, and prescription therapies when appropriate.
An important consideration is dose. Some cardiovascular trials have linked higher-dose omega-3 supplementation—particularly around 4 grams of EPA and DHA per day—to an increased risk of atrial fibrillation (AFib), an irregular heart rhythm. This risk is especially relevant for people with cardiovascular risk factors. If you have a history of AFib or heart disease, or are thinking about taking high-dose omega-3 supplements, discuss the benefits and risks with your healthcare professional before starting or changing your dose. Eating omega-3-rich foods as part of a balanced diet is different from taking high-dose supplements.
Omega-3s have also been studied for age-related macular degeneration (AMD). In the AREDS2 study, adding omega-3 supplements did not provide additional protection against progression to advanced AMD. Their potential role in relieving dry eye is a separate question from their effect on AMD.
The bigger picture for healthy aging
Not smoking, managing blood pressure and blood glucose, being physically active when possible, protecting your eyes from UV exposure, and receiving recommended examinations all matter. If you have AMD or another established eye condition, ask which nutrition recommendations are evidence-based for your specific diagnosis. The strongest plan combines healthy habits with individualized medical care.
Next step: Have questions about your eye health or whether you need a comprehensive examination? Contact Bohonos Eye Care at office@bohonoseyecare.com or 210-729-0544 for general scheduling information. Do not use email for emergencies.