The power of vision allows us to enjoy this colorful, amazing world. The human eye identifies about 10 million colors! The different eye colors occur because of the pigmentation of the iris and light reflection, but here are some fun facts you may not know about eyes:
1. The experts say that heavily pigmented dark brown eyes appear almost black. And, don’t forget – complete dark eyes do not exist! This is usually the result of heavy pigmentation of melanin in the iris that makes dark brown eyes appear almost black.
2. And, the perfect combination of blue, green and brown results in hazel eyes. The moderate amount of melanin in the iris gives the hazel color.
3. Amber eyes appear due to the deposition of yellow pigment in the iris. Amber eyes look similar to hazel eyes, but both are different.
4. Did you know that some people are born with two different eye colors? Well yes, and the experts say that this special condition is called Heterochromia. Majority of the Heterochromia cases are hereditary. And, in some cases, Heterochromia is caused due to the blood staining in the iris.
5. As we said, brown eyes contain more melanin than others. A dark brown eye is the result of the excess amount of melanin in the iris and it is dominant in humans.
6. The color of eyes depends on the melanin found in the iris. The pigmentation of the iris depends on the concentration of melanin, so eye color varies from light brown to black. Besides this, the appearance of green, blue, hazel, red, violet color in eyes results due to the light reflection. Blue and green pigments do not exist in eyes. The phenomenon of eye color is similar to that of blueness of the sky.
7.You’ll be amazed when we tell you that the majority of Northern and Eastern Europeans have grey colored eyes. Grey eyes contain a dark epithelium at the back of the iris and clear stroma at the front.
8.Even if no one in the past few generations of your family had blue or green eyes, these recessive traits can still appear in later generations.
9.Each of your eyes has a small blind spot in the back of the retina where the optic nerve attaches. You don’t notice the hole in your vision because your eyes work together to fill in each other’s blind spot.
10. Newborns don’t produce tears. They make crying sounds, but the tears don’t start flowing until they are about 4-13 weeks old.