Glutathione, what is it? Do I need it? Johnson Chiropractic, Inc. Avocados have lutein and zeaxanthin, which absorb light waves that can harm your vision. People who eat lots of foods rich in these antioxidants are less likely to have age related macular degeneration. Avocados have lutein and zeaxanthin, which absorb light waves that can harm your vision. People who eat lots of foods rich in these antioxidants are less likely to have age related macular degeneration. Avocado and Its By Products as Natural Sources of Valuable Anti Inflammatory and Antioxidant Bioactives for Functional Foods and Cosmetics with Health Promoting Properties