The white of the baby’s eyes is blue, which may be caused by normal phenomenon, iron deficiency, congenital glaucoma and other reasons. 1. Normal phenomenon: in infancy, the baby’s sclera is immature and relatively thin, you can see the color of the choroidal membrane of the uvea underneath the color through the print out, manifested as the white of the eye blue, is a normal physiological phenomenon. With the development of the baby’s eye, the sclera layer is gradually developed, this phenomenon will slowly disappear. 2. Iron deficiency: the baby’s white of the eye blue may also be caused by iron deficiency anemia, because the sclera needs iron in the process of gel synthesis, iron deficiency sclera thinning, the white of the eye will slowly become light blue. 3. Congenital glaucoma: if the baby’s eyes are blue, accompanied by photophobia, tearing, blepharospasm and other abnormalities, it may be congenital glaucoma, because under the action of high intraocular pressure, the scleral tissue will be compressed and thinned out, so that the white of the eye blue performance. It is recommended that children with blue whites of the eyes accompanied by other symptoms should seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.