Why Babies' Eye Color Can Change

The Basics

Most newborns have dark eyes, but some may have lighter eyes or even a mix of colors. It is normal for a baby's eye color to change over the first couple of years. Many babies are born with blue eyes, which can then turn to shades of green, hazel, or even brown. It is not uncommon for babies’ eyes to change multiple times during the first year.

Genetics

Genetics plays a major role in determining a baby's eye color. All babies are born with some amount of melanin in their eyes, a pigment that determines the color. It is believed that the amount of melanin present in the eyes at birth is determined by genetic factors, with some babies being born with more melanin than others. As the baby grows and develops, the amount of melanin in their eyes will increase or decrease, resulting in a change in eye color.

Environmental Factors

Environmental factors can also play a role in eye color change. Sunlight, for example, can cause the melanin in a baby's eyes to darken. Also, some medications, such as antibiotics, can cause a baby's eye color to change. It is important to remember that these changes are usually temporary and the eye color will return to normal once the medication has been stopped.

When to Worry

It is important to remember that most changes in eye color are normal and nothing to worry about. However, in some cases, a change in eye color can be a sign of an underlying medical condition. If the change is sudden and significant, it is important to talk to a doctor to make sure the baby is healthy.

Conclusion

Babies' eyes can change color over the first couple of years, and this is usually due to genetics and environmental factors. Most changes in eye color are normal and nothing to worry about, but it is important to talk to a doctor if the change is sudden and significant.