Eagle eye to the tear duct”. Eagle tears moisten the eyes and contain the chemical lysozyme which protects against salt water and also destroys bacteria, thus preventing eye infections. The nictitating membrane acts a sweeping wiper across the eye. The eagle iris is a pale yellow color, much lighter than human eyes. Both eagles and humans have a white area called the sclera, but in the case of eagles, it is hidden below the eyelid. Eyelid openings are oval-shaped in humans, while they are round in the case of birds' eyes. Most eagles have excellent vision. Generally, eagles do not suffer from
Tache noir de la sclerotique eye, which becomes brown and then black within a few hours, upon which dust settles and the surface becomes wrinkled. Tache noir de la sclerotique Tache noire de la sclerotique (French for "Black spot of the sclera") is one of the ocular signs of death in which a reddish-brown discoloration is transversely arranged across the sclera. It occurs when the eyes are not completely closed so that the sclera is exposed to air. If the eyelids are open for a few hours after death, a film of cell debris and mucus forms two yellow triangles on the sclera, each at