Iranian ophthalmologist Behnam Ghaffarzadeh examines a duck that has just undergone cataract extraction at the surgeon’s office in the northwestern city of Tabriz, May 25, 2017.

The 9-year-old duck had lost sight in one eye due to an injury that resulted in developing the disease. Iranian media say such operation on birds is unprecedented in the country.  (PHOTO: Amir Sadeqi/Fars)

AFM/MG