What are the eyes on the tail of an ancient peacock called?

My eyes are dizzy. Hualing is a special ornament worn by nobles in Qing Dynasty. It is made of peacock's tail feathers. Hualing refers to the peacock feather with "dazzling", commonly known as eyes, which is a circular pattern of eyes on the peacock. A circle can be regarded as a glance, so the eyes on the peacock's tail were called dazzling in ancient times.