What about blue eyes?

White eyes and blue eyes are medically called blue sclera. This sign is mostly caused by chronic iron deficiency. Iron is a very important substance in the collagen tissue on the sclera surface. After iron deficiency, the sclera can be thinned, which can't cover the deep blue under the sclera.

At that time, the whites of the eyes were blue. Long-term iron deficiency will inevitably lead to

. All patients with moderate and severe anemia have blue and white eyes.

Therefore, the sclera of the eye turns blue.

Sensitive signal.

How do white eyes turn blue?

The reason why white eyes are blue is basically because the thickness of sclera (commonly known as "white eyes") is thinner than that of normal people. The part of the fundus that can be seen from the outside looks blue because of the color change of light. The following points can be considered: 1. Physiology after birth, that is, blue eyes are short-lived. Symptoms will get better when you grow up. 2. The sclera itself is thin after birth. It is related to the abnormal connective tissue that constitutes the sclera itself. The most famous example is the so-called "glass doll". Because human bones also belong to connective tissue, in addition to the development problems of bones themselves, they are often accompanied by connective tissue problems in other parts. For example, what we now call "blue sclera". 3. People with high myopia may also have blue sclera, but this is obtained compared with 1. Because of the long anterior and posterior diameter of myopia patients' eyeballs, the outer sclera is also pulled open, just like blowing balloons. The bigger the balloon blows. The outermost layer will also become thinner, which is the same reason. In addition, the "high myopia" mentioned here, ophthalmology generally believes that more than 500-600 degrees is high myopia. 4. Inflammation of the choroid in the inner layer of the eyeball causes lymphocytes in the blood to penetrate into the sclera tissue, which may also make the whites of the eyes look blue. Generally related to infection or immune diseases. I suggest you find an ophthalmologist for a special treatment.