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Diet can have a long-term effect on eye health, and there is evidence that good nutrition is important to protecting eyes as we age. Studies have connected a diet rich in antioxidants and anti-inflammatory foods with a reduced risk of the most common age-related eye diseases, including cataracts, diabetic retinopathy and age-related macular degeneration. The following are foods packed with the vitamins and minerals you need to help protect your eyes.
1. Blueberries
These violet-hued gems are rich in anthocyanins, potent antioxidants that bolster collagen structure in the retina and provide extra vision protection, notes Dr. Johanna Seddon, a professor at UMass Chan Medical School and coauthor of Eat Right for Your Sight. Anthocyanins also may improve vision in people with normal tension glaucoma, a form of the disease that damages the optic nerve. If you spend a lot of time in the sun, anthocyanins can protect your retinas from damage caused by UV light exposure. You’ll also get anthocyanins from other purple, blue and dark red foods like red or purple grapes, blackberries, pomegranates and cranberries.
2. Dark chocolate
Here’s a guilt-free reason to indulge in a chunk of dark chocolate today: A 2018 study published in JAMA Ophthalmology found that adults who ate a bar of dark chocolate could literally see better about two hours later — with greater improvements in visual clarity and visual contrast sensitivity— than those who consumed milk chocolate. And flavonoids found in dark chocolate may help improve vision in people with glaucoma as well as reduce the risk of macular degeneration. But consume in moderation, or you’ll have other health issues to worry about!
3. Eggs
The high price of eggs may be worth paying: Egg yolks are loaded with the same powerful, eye-protecting antioxidants — lutein and zeaxanthin — that are found in leafy green vegetables, notes Dr. Marguerite McDonald, a clinical professor of ophthalmology at NYU Grossman School of Medicine. The beauty of getting those antioxidants from an omelet is that it’s easier to absorb all their goodness because of the high fat content in eggs. A 2020 study in the journal Clinical Nutrition found that people who consume two to four eggs per week have a significantly lower risk of developing late-stage age-related macular degeneration than those who consume one egg or less per week over 15 years. Egg yolks are a rich source of choline, which plays an important role in eye health, and vitamin D, which may help protect against macular degeneration.
4. Oysters
Shellfish, such as oysters, are among the best sources of the mineral zinc, which protects eyes against the damaging effects of sunlight, McDonald notes. In high doses, zinc also appears to slow the progression of macular degeneration in those who are in the early stages of the disease. But you don’t need more than the recommended dose — 8 milligrams a day for women and 11 milligrams a day for men. Oysters deliver more of the mineral than any other food, but you also can get plenty of zinc from lean red meat, poultry, beans, legumes and fortified cereals.
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