Hunting for information on grey eyes? Hoping to find out how many people have grey eyes on the planet? When one considers that an estimated 7 billion people live on planet earth, this means only ,, million humans have grey as their eye color. Grey eyes can come in different shades, including hues of smokey blue, green and in some cases, hazel-brown. Much depends on the person, lighting, atmospheric conditions and x-variables. As a matter of transparency, you should know that I have brown eyes. Trying to define grey eyes is difficult. In the case of smoke colored eyes, the intensity of greyness present depends upon the person.
Gray eyes are often mistaken for blue eyes
Gray eyes are super rare
Eye color is a polygenic phenotypic character determined by two distinct factors: the pigmentation of the eye 's iris   and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in the iris pigment epithelium located on the back of the iris , the melanin content within the iris stroma located at the front of the iris , and the cellular density of the stroma. The brightly colored eyes of many bird species result from the presence of other pigments, such as pteridines , purines , and carotenoids.
Posted on August 25, in General Eye Care. When someone wants to enhance their vision, they may try contact lenses or seek out LASIK eye surgery. But what if they want to change the color of their eyes? People have long been fascinated with eye color; after all, eyes come in a wide range of shades.
Gray eyes are anything but what many may associate with the color gray — like gloomy skies and drab and depressing color schemes. If you ever look deeply into a pair of gray eyes, what you may have thought about the color may just be quickly proven wrong. Once you look closely at gray eyes, you'll see that gray is a color that has depth and warmth.