Human is Herbivore
Nutrients that benefit human Vision and Eyes: Lutein, Zeaxanthin
Lutein and zeaxanthin protect the eye and reduce the risk of Cataracts and age-related macular degeneration (AMD). Beyond reducing the risk of eye disease, separate studies have shown that lutein and zeaxanthin improve visual performance in AMD patients, cataract patients and people in good health.

Source: American Optometric Association
That is you have to eat 160 eggs to get the amount of Lutein in a cup of cooked Kale !
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