1. An iris recognition apparatus for recognizing iris in an eyeball, the apparatus comprising: a first image collection unit collecting a first image of the eyeball; a second image collection unit comprising a lens having a larger angle of view than a lens of the first image collection unit and collecting a second mage of the eyeball; and a control unit correcting the first image based on a ratio between the angle of view of the lens of the first image collection unit and the angle of view of the lens of the second image collection unit, and measuring the distance between the eyeball and the iris recognition apparatus based on the first image corrected and the second image.