Kate Bosworth Eyes Phenomenon

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Catherine Ann Bosworth, or well known as Kate Bosworth is an American actress who has a rare phenomenon. Kate Bosworth eyes have different colors. The color of her left eye is blue; meanwhile the right eye has a goldish brown hue on the bottom. The phenomenon of Kate Bosworth eyes is scientifically called Heterochromia Iridium. Usually heterochromia refers to the difference in the color, usually of the iris but also of hair or skin. Heterochromia is the result of the relative excess or lack of a pigment named melanin. This phenomenon may be casused by the genetic factors or by disease or injury. Eye colors are determined primarily by the concentration and distribution of melanin.
An excess of melanin in human eyes indicates hyperplasia of the iris tissues, and a lack of melanin indicates hypoplasia. There are two kinds of heterochromia iridis or heterochromia iridum, complete and sectoral heterochromia. One iris is in different color from the other in complete heterochromia; meanwhile, in partial or sectoral heterochromia, part of one iris is in different color from its remainder. Heterochromia can also be classified by onset, whether it is genetic or acquired. Genetic or congenital heterochromia is inherited in autosomal dominant trait. Meanwhile, acquired heterochromia is usually caused by injury, inflammation, the use of certain eyedrops, or tumors.

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