"The mixed type of iris, midway between the hematogenic and the lymphatic, is most closely associated with the Choleric temperament. The texture is also mixed, with alternating dense and loose patches of fibers.
According to iridologists, there are only two basic kinds of iris colors - the brown - hazel hematogenic and the blue - gray lymphatic. Those of a Choleric temperament often have green eyes, but upon closer examination, this is shown to be nothing more than blue or gray mixed with yellow discolorations. " http://www.greekmedicine.net/