In most cases, the iris heterochromia does not have a pathological significance. The reason for this manifestation is to be attributed to the different quantity of melanin in the two eyes: if the pigment is not very concentrated, a blue color will occur, while in the case opposite the iris will turn towards the shades of brown.
Heterochromia can be present at birth (therefore it is congenital and recognizes a "genetic origin) or acquired, that is, it occurs as a result of particular events and pathologies.
Different colored eyes can occur, for example, as a result of trauma, adverse reactions to certain drugs and eye diseases, as in the case of Fuchs' heterochromic iridocyclitis, Horner's syndrome and pigmentary glaucoma.
If heterochromia is due to an eye disorder, treatment can be directed to the underlying cause.
it is a thin annular membrane, visible from the front through the transparency of the cornea. This structure of the eye contains pigmented cells, blood vessels and two layers of smooth muscle, whose contraction allows the pupil diameter to vary. In addition to determining the color of our eyes, in fact, the iris acts as a muscular diaphragm, regulating the amount of light reaching the retina.
