Eyes that have clear distinction between black and white means that the eyes are not appear in yellow, red or other colors. The main cause of yellowing of the eyes is liver problems, for this case, custoer should get consultation from medical doctor. The eyes appear redness because of the swelling of microvessels in the eyes. One of the causes of eye redness is because of dry eyes. Clinical trials have shown that Astaxanthin in E-VITE can effectively improve dry eye symptoms.