Eggs are an excellent source of protein, essential amino acids (yes, all 9!), along with vitamins and minerals that directly contribute to both eye and hair health.  The egg is also a satisfying snack or meal, reducing the chances of over-consumption of a less nutritionally dense food choice.  The concern most frequently raised when eggs are recommended as a healthy part of a diet relates to heart and cholesterol health – for more on that, see Real Fats posted here.