"Eyes rainbow" refers to a rare and captivating phenomenon where an individual's eyes display multiple colors, resembling the spectrum of a rainbow. This occurrence can be due to certain medical conditions, such as heterochromia (where each eye is a different color) or sectoral heterochromia (where one eye has multiple colors). However, some people may also have naturally multi-colored eyes due to genetic factors, with shades of green, blue, brown, or amber blending together in a unique and striking way. Additionally, some artists or designers may use the term "eyes rainbow" to describe stylized or digital depictions of eyes with rainbow-colored irises, often seen in fantasy art or creative visual representations.