EYECUP
eyecup, eyebath, eye cup
(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; “an eyecup is called an eyebath in Britain”
Source: WordNet® 3.1
Etymology
Noun
eyecup (plural eyecups)
(US) an eyebath
coon eyes
A shield surrounding the eyepiece of a camera.
Source: Wiktionary
Eye"cup`, n.
Definition: A small oval porcelain or glass cup, having a rim curved to fit
the orbit of the eye. it is used in the application of liquid
remedies to eyes; -- called also eyeglass.
Source: Webster’s Unabridged Dictionary 1913 Edition