Heterochromia iridium is a difference in coloration of the iris caused by relative excess or lack of melanin (a pigment). There are two basic types of the condition – complete heterochromia (one iris is completely different color from the other) and partial heterochromia or sectoral heterochromia, (part of one iris is a different color from its remainder).There are no exact statistics referring to the incidence of this bizarre condition but it is safe to say that less than 1% of people have it. It is a very rare condition but still there are millions of people in the world who have it, including some of the well-known celebrities. From strikingly noticeable to very tiny and subtle eye color variations, check out this cool anomaly in these 25 celebrities with differently colored eyes.
Josh Henderson (born October 25, 1981), American actor, model and singer.

Gracie Allen (born July 26, 1895 – died August 27, 1964), American comedienne.

Shawn Horcoff (born September 17, 1978), Canadian professional ice hockey centre currently playing for the Dallas Stars.

Mila Kunis (born August 14, 1983), Russian-American actress.

David Bowie (born 8 January 1947), English singer, songwriter, multi-instrumentalist, record producer, arranger, and actor.

Kiefer Sutherland (born 21 December 1966), British-Canadian actor, film producer, and film director.

Jonathan Rhys Meyers (born 27 July 1977), Irish actor, model and singer

Ilya Kovalchuk (born April 15, 1983) Russian professional ice hockey left winger currently playing for SKA Saint Petersburg.

Jane Seymour, (born 15 February 1951), English actress.

Demi Moore (born November 11, 1962), American actress, filmmaker, former songwriter, and model.

Max Scherzer (born July 27, 1984) American professional baseball pitcher.

Kate Bosworth (born January 2, 1983), American actress, model and singer.

Tim McIlrath (born November 3, 1978), American musician, singer, and songwriter.

Oded Kattash (born October 10, 1974), Israeli basketball coach and former player.

Michael Flatley (born July 16, 1958), American dancer, choreographer and musician.

Elizabeth Berkley (born July 28, 1972), American television, film and theatre actress.

Henry Cavill (born 5 May 1983), British actor.

Alyson Hannigan (born March 24, 1974), American actress.

Benedict Cumberbatch (born 19 July 1976), English actor and film producer.

Michael Schwimer (born February 19, 1986), American professional baseball relief pitcher.

Pacho O'Donnell (born in 1941), Argentine writer, politician and physician.

Dan Aykroyd (born July 1, 1952), Canadian actor, comedian, screenwriter and singer.

Xavi (born 25 January 1980), Spanish soccer player currently playing for FC Barcelona.

Simon Pegg (born 14 February 1970), English actor, comedian, screenwriter, and film producer.

Alice Eve (born 6 February 1982), English actress.
