eyecup

(noun) a small vessel with a rim curved to fit the orbit of the eye; use to apply medicated or cleansing solution to the eyeball. Synonyms: eyebath, eye cup. Example: "An eyecup is called an eyebath in britain."

(noun) (embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina. Synonyms: optic cup.