Medically reviewed by Bryan M. Wolynski, OD Key Takeaways The iris controls how much light enters the eye by adjusting the size of the pupil.The color of your iris is determined by the amount of ...

Eye color is determined by the amount of melanin present in the iris of the eye, which develops as newborn babies grow.

This risky trend is iris-istable. An ophthalmologist with 3.4 million followers on TikTok has gone viral due to his specialization in changing people’s eye color permanently. Dr. Brian Boxer Wachler ...