You can meaningfully lower your risk of age-related macular degeneration (AMD) through a combination of dietary choices, lifestyle habits, and regular monitoring. No single strategy eliminates the risk entirely, but the evidence behind several preventive measures is strong enough to act on today.
Why Diet Matters More Than You Think
A Mediterranean-style diet, rich in fish, vegetables, olive oil, nuts, and whole grains, is one of the most well-supported protective factors. People 55 and older who closely follow this eating pattern have a 41% reduced risk of developing AMD, according to research from the Université de Bordeaux.
Two nutrients deserve special attention: lutein and zeaxanthin. These plant pigments accumulate in the macula, the part of the retina responsible for sharp central vision, where they act as a natural filter against damaging light. You’ll find them in dark leafy greens like kale, spinach, and collard greens, as well as in egg yolks, corn, and orange peppers. Getting at least 5 to 20 milligrams per day of combined lutein and zeaxanthin produces a measurable increase in macular pigment density, and intakes above 20 milligrams per day roughly triple that benefit.
If you already have intermediate AMD or advanced AMD in one eye, a specific supplement formula can slow progression. Known as AREDS2, it contains 500 mg of vitamin C, 180 mg of vitamin E, 80 mg of zinc, 2 mg of copper, 10 mg of lutein, and 2 mg of zeaxanthin. This formula was developed and tested through a major clinical trial run by the National Eye Institute. It’s widely available over the counter, but it’s designed for people with existing disease, not as a general preventive for everyone.
Quit Smoking, or Never Start
Smoking doubles your risk of developing AMD. It accelerates oxidative damage to the retina and reduces blood flow to the delicate tissue at the back of the eye. Among modifiable risk factors, smoking is the single most damaging one. Quitting at any age reduces the cumulative harm, though the longer you’ve been smoke-free, the better.
Keep Your Blood Pressure and Weight in Check
Your eyes depend on a dense network of tiny blood vessels called the choroid to deliver oxygen and nutrients to the retina. High blood pressure, and especially blood pressure that swings up and down over time, damages the lining of those vessels. This impairs blood flow, starves retinal cells of oxygen, and can trigger the growth of abnormal new blood vessels, the hallmark of wet AMD, the more severe form of the disease.
Carrying extra weight compounds the problem. People with a BMI between 25 and 29 (overweight) have roughly 2.3 times the risk of progressing to advanced AMD compared to those at a healthy weight. At a BMI of 30 or above (obese), the risk is essentially the same: about 2.4 times higher. Losing even a moderate amount of weight can improve both blood pressure and the inflammatory environment that contributes to AMD progression.
Stay Physically Active
Regular exercise appears to protect against early AMD. A meta-analysis combining data from multiple large studies found that people with little or no physical activity had a 19% higher risk of developing early-stage AMD compared to those who were highly active. The benefit likely comes from improved cardiovascular health, better blood flow to the retina, and lower systemic inflammation. You don’t need extreme fitness routines. Consistent moderate activity, like brisk walking, cycling, or swimming several times a week, is enough to land in the protective range.
Protect Your Eyes From UV Light
Chronic sun exposure contributes to oxidative stress in the retina over a lifetime. Sunglasses that block 100% of both UVA and UVB radiation provide the best protection. Look for a label on the lenses confirming full UV coverage. Wrap-around styles or larger frames help block light that enters from the sides and top. UV light penetrates clouds, so wearing sunglasses during all daylight hours, not just on bright sunny days, is the recommendation from the American Academy of Ophthalmology.
Get Regular Eye Exams
AMD often develops without noticeable symptoms in its early stages. A dilated eye exam can detect drusen, the tiny yellow deposits under the retina that signal the disease’s beginning, long before you notice any vision changes. Starting at age 50, routine comprehensive eye exams become especially important, and more so if you have a family history of AMD.
Monitor Your Vision at Home
If you’ve already been diagnosed with dry AMD, daily home monitoring with an Amsler grid is one of the simplest things you can do to protect your sight. The grid is a square pattern of straight lines with a dot in the center. You look at it one eye at a time, checking for any areas where the lines appear wavy, blurry, or missing. These distortions can signal that dry AMD is converting to wet AMD, which requires prompt treatment to prevent rapid vision loss.
The key is consistency. The American Academy of Ophthalmology recommends checking once a day, every day. Changes can appear suddenly, and catching them within days rather than weeks can make a significant difference in treatment outcomes. Your eye doctor can provide a grid, or you can print one from their website.