White eyes, blue eyes. What's going on?

White eyes blue refers to the blue sclera and the sclera of the eye is light blue. Because the sclera is composed of collagen tissue, if the collagen synthesis is insufficient, the sclera will become thin, unable to effectively cover the brown-black choroid in the eye, it looks light blue under natural light. Some diseases also manifest as blue sclera phenomenon, common causes are osteogenesis incomplete, manifested as brittle bone, blue sclera and deafness three characteristics, and accompanied by ligament relaxation and tooth changes. It can also be seen in anemia. Treatment should be found to cause blue sclera of the primary disease, for the cause of treatment, due to anemia caused by the most important is to correct its iron deficiency anemia.