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Animal-based omega-3 fats could help some older adults protect their eyesight longer. Eating more foods rich in these fats appears to slow advanced macular degeneration, a common cause of age-related blindness.
An observational study that included close to 2,400 participants found that people who had advanced macular degeneration, including blood vessel problems and atrophy in the retina, were significantly less likely to consume foods high in omega-3's.