The eyes really are a window to the soul, according to scientists.
Patterns in the iris can give an indication of whether we are warm and trusting or neurotic and impulsive, research has found.
Everyone has a different structure of lines, dots and colours in their iris.
So scientists at Orebro University in Sweden compared the eyes of 428 subjects with their personality traits to see if these structures in the iris reflected their characters.
They focused on patterns in crypts - threads which radiate from the pupil - and contraction furrows - lines curving around the outer edge - which are formed when the pupils dilate.
Their findings showed those with denselypacked crypts are more warmhearted, tender, trusting, and likely to sympathize with others. In comparison, those with more contraction furrows were more neurotic, impulsive and likely to give way to cravings.
The researchers argued that eye structure and personality could be linked because the genes responsible for the development of the iris also play a role in shaping part of the frontal lobe of the brain, which influences personality.
They say the findings could one day be used in psychoanalysis and by companies screening candidates for jobs.
Via Vilma Bonilla, Ivon Prefontaine