For the same reason nearly every other part of the body has them. They are living tissue and so need blood to live. The blood is brought by the arteries and carried away by the veins.
Yes- but not in the lens
do not hand rubbed with their eyes. If it was not good to the doctor.
veins!
Veins appear blue because of the way light interacts with the skin. When light passes through the skin, it is absorbed by the tissues and reflected back to our eyes. The blue color of veins is due to the way light is absorbed and scattered by the skin, making them appear blue to our eyes.
Heredity, fair complexion are the most common causes- not a disease.
i dont know but i have em and im 12
drop the world by lilwayne ft. eminem
The blue color of veins under the skin is due to the way light interacts with the blood vessels. Veins appear blue because the skin absorbs red light, while blue light is reflected back to our eyes, making the veins look blue.
This is because of strain on eyes. Strain is probably because of concentration. And so more blood passes from veins and they look red.
Pulsing veins are a sign of stress. I have the same thing. All over my head and face I can feel veins pulsing and can even see them pulsing at the temples and beneath my eyes.
Veins appear blue under the skin because of the way light interacts with the skin and the blood inside the veins. The skin absorbs different colors of light, but blue light is able to penetrate deeper into the skin and is reflected back to our eyes, making the veins appear blue.
Veins appear blue when they are close to the skin's surface because of the way light interacts with the skin. The skin absorbs most of the light that hits it, but blue light is able to penetrate deeper into the skin and is reflected back to our eyes, making the veins appear blue.