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Can Your Eyes Change Color? | Bard Optical

Can Your Eyes Change Color?

Blue eye changing color

Have you ever caught a glimpse of your eye color in the mirror and wondered if they looked brighter than usual?

Have you ever wondered if your eye color has the potential to change?

As it turns out, this idea may not be as farfetched as it seems.

The iris of your eye is a muscle, and like all muscles, they expand and contract to control the size of your pupil.

When the pupil changes size, the pigments in your iris compress and expand, which can change your eye color.

Below are five factors that can cause your eye color to change.



According to the Fort Lauderdale Eye Institute, extreme emotions can change your eye color.

When you experience a strong emotion, your body releases a hormone that causes your pupils to expand or contract. This hormone, combined with the sudden change in pupil size, can change the hue of your eyes.

When happy or angry, your eyes have the potential to become more vibrant.

While you’re sad, your eyes can assume a reddish tint, making them appear brighter.


Sun Exposure

Exposure to light causes your body to produce more melanin.

This increase in melanin levels around your eyes can make them appear darker.



We are usually born with light blue or gray eyes. As we grow older, our eyes change color and darken.

The melanin levels also increase as we age, making our eyes appear darker as we get older.



What you eat can affect the tint of your eyes.

Foods that are high in iron can make your eyes shine brighter.

Consuming fish products can strengthen your eye color.

Meanwhile, chamomile can relax your pupils and make them appear warmer in shade, or a different color entirely.



Heterochromia is a condition where each iris is a different color. For instance, someone who has a green left eye and a blue right eye has heterochromia.

Partial heterochromia means only part of the iris is a different color.

Central heterochromia is a condition where your iris has two different colored rings.

Heterochromia does not affect health. You can either be born with heterochromia or develop it later in life as a result of conditions like:

  • Eye surgery
  • Eye bleeding
  • Swelling
  • Injury
  • Glaucoma
  • Development of tumors in the iris

There are a variety of external factors that can change your eye color. Whether it is as drastic as heterochromia, or as subtle as a lighter or darker hue, your pupils are not immune to change.

The next time you look in the mirror and notice that your eyes look brighter than usual, don’t do a double-take, because you are probably not being deceived.

Think about all the factors that can influence your eye color, and you may just determine why and how your eyes are constantly changing.

Downloadable kids home color blind test