they come in many colors. the most common are brown, hazel, and blue. some not-so-common colors are gray, green, and very rarely, purple.
Humans have three types of cones in their eyes, which are responsible for color vision.
They are the same colour colour as humans eyes!
Humans have three types of cones in their eyes, which are responsible for color vision.
Like humans, it varies.
They don't see in color, and that is because their eyes aren't as developed as humans'.
vampires eyes change color when they are either a newborn or when they had drank a humans blood
No. You can bite a human no matter what color his/her eyes are.
I think that the difference between human eyes & dog eyes is that all dogs are color blind but not all humans are color blind. We can see in color as dogs cannot.Yes this is the maindifference but I would like two point out that through dogs are color blind that they do indeedsee in color but they are missing a type of cone that humans have and they have way less. Dogs have a lot more rods then humans.
Most people have blue or brown eyes, but some people do have eyes that are a greyish color. People whose eyes are grey have eyes that look perfectly normal, except the iris is a different color from what the majority have.
Same reason humans have diff. colours of skin, eyes, and hair, pigmentation.
According to biologists, the color of an elephantâ??s eyes can vary from a brown or reddish-yellow color to a green color.
Humans cannot see the color ultraviolet because our eyes are not sensitive to that wavelength of light. Ultraviolet light has a shorter wavelength than visible light, making it invisible to the human eye.