Two antioxidants found in eggs—lutein and zeaxanthin—have powerful protective effects on the eyes. You won’t find them in a carton of Egg Beaters; they only exist in the yolk. The antioxidants significantly reduce the risk of macular degeneration and cataracts, which are among the leading causes of vision impairment and blindness in the elderly. In a study published in the Journal of Nutrition, participants who ate 1.3 egg yolks every day for four-and-a-half weeks saw increased blood levels of zeaxanthin by 114-142% and lutein by 28-50%!