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When Do Kitten’s Eyes Change Color?

by Albert John September 04, 2017

When Do Kitten’s Eyes Change Color?

During a kitten’s developmental period, a baby kitten is trying to learn to see things although its eyes will not immediately fully mature—with an assumed lifelong adult coloration--  till the baby kitten is nearly from three to six months of age. For kittens, the sense of vision comes first then followed by the sense of color. After a kitten’s eyes open for the first several weeks, they seem to be blue in color. This hue is due to the refracted light off of the baby kitten’s cornea, the outer transparent covering of the eyeball and the comparative thickness of its 4 layers. While the eyes of the cat mature, our perception about it are continually influenced and affected by this refracted blue-green or blue outer covering.

 By week six or seven, the eye color of a kitten may start to alter. The colored part of the eye, which is known as iris, contains melanocytes. The moment the eye is mature enough, these melanocytes will start producing melanin, which is a pigment that provides a mature adult coloration of its eye. The ultimate color and its intensity or depth can be deciphered by knowing how many melanocytes are there and how much melanin they produce. On a spectrum, which shows the green ones on the bottom and brown at the other part—the light green indicates that the iris of the cat has yielded the least amount of melanin. And on the other hand, the color brown yielded the most amount of it.

Albert John
Albert John


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