Sectoral Heterochromia: In sectoral heterochromia, the person's iris has two entirely different colors in the same area. Sectoral heterochromia appears as an irregular spot that is a different color than the person's eye color and does not form a complete ring around the person's pupil.
Source: https://www.instagram.com/p/CgJf6IxMLKE/?igshid=YmMyMTA2M2Y=