Torpid Bearbarian Iris

 is an eye.

Obtaining

 * Dropped by
 * Torpid Bearbarian

Uses

 * Used in the craft of
 * Archaic Bow
 * Celestial Bearbarian Belt
 * Celestial Bearbarian Mask
 * Eculture Cape
 * Giger's Nightmare Blade
 * Lemming Bracelet