Dogon

The Dogon are a thirteen-eyed reptilian race.

History
The Dogon evolved on a race with a climate colder than that of Earth, and eventually developed space travel at some point during their history and occasionally travelled to Earth, first visiting it at least in 1666 at the time of the Great Fire of London, usually leaving behind their so-called Sixth Eyes. In 2005, a Dogon spaceship with a crew of twenty crashed in the river Humber and were studied by the crew of Torchwood 1. After the Battle of Canary Wharf, Dogon Sixth Eyes appeared on eBay and became very popular in Belgium.

Dogon eyes
Four of the eyes of a Dogon are for sight, six are for show, but only the purporse of one of the other three (known as the Dogon Sixth Eye) is known, and that is to allow the holder to look back and put things in perspective. It is known to work especially well when swallowed.