5 Babies are often born with less melanin in the eyes due to the darker conditions in the womb. Melanin ProductionĮye color is determined by the amount and quality of melanin pigment in the front layer of the iris (stroma). Scientists have also defined eye color as an inherited trait. The variations in eye color are determined by the amount and quality of this pigment. What Determines Eye Color?Įvery baby has the same type of melanin in their eyes. 4 However, some may take up to 3 years to have a permanent eye color. However, wait a few more months for a more stable eye color.Īccording to eye experts, most babies will have their lifetime eye color by the time they’re 9 months old. The most noticeable ones will occur around 3 to 6 months after birth.Īt this point, you can most likely predict the baby’s final eye color. You’ll notice significant changes before their first birthday. Just like skin color, a baby's eyes change color due to exposure to sunlight. This changes as their eyes respond to light. Green eyes are the least common, accounting for only 9% of the US population.īabies often have less melanin in their irises at birth. Pheomelanin (reddish-yellow) combines with the light-scattering effect of the iris (which makes eyes look blue) to make eyes appear green. The type of melanin responsible for brown eye color is eumelanin (black or brown). 2 Melanin also protects the photoreceptor cells in the retina against infrared, visible light, and absorbed UV radiation. It’s responsible for skin, hair, and eye color. On the other hand, most Caucasian babies are born with blue or gray eyes that may change to green, hazel, amber, or brown depending on the amount of melanin present in the iris (the colored part of the eye).įor reference, melanin is a substance produced by cells known as melanocytes. 1 The brown shade may darken slightly with time. Studies show newborns of Black, Indigenous, and People of Color (BIPOC) are likely to have brown eyes at birth. Most babies (63%) are born with brown eyes, but color variations exist. What Color are Babies’ Eyes When They’re Born?
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