THIS EYE PATCH IS A HALF QUILL OSTRICH HIDE WITH LEATHER BACKING. 

This is an OSTRICH skin eye patch, handmade with a dome to allow the free movement of eyelashes. The elastic is adjustable, comfortable and replaceable.  The patch can be cleaned with a damp cloth.

Each patch is different due to the variations in hide.  This one is from the half quill area on the ostrich.
 The crown or back of the ostrich has the most bumps or quill follicles while the sides are quite smooth. The area between is the half quill area where quill follicles are not so dense.  
 The leather is distinctive for its pattern of bumps or vacant quill follicles, ranging from a smooth field to bumps in varying densities.