Eyewash is a fluid, commonly saline

Saline (medicine)

In medicine, saline is a general term referring to a sterile solution of sodium chloride in water but is only sterile when it is to be placed intravenously, otherwise, a saline solution is a salt water solution...

, used in the aid of rinsing of the eye

Human eye

The human eye is an organ which reacts to light for several purposes. As a conscious sense organ, the eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth...

. Eyewash may also describe the apparatus used to physically wash the eyes in the case that they may be contaminated by foreign materials or substances.

Eyewashes may be beneficial to those with sensitive eyes and can provide relief to the painful side effects of sensitivity. However, prolonged usage of such products will cause mild side effects

Side Effects

Side Effects is an anthology of 17 comical short stories written by Woody Allen between 1975 and 1980, all but one of which were previously published in, variously, The New Republic, The New York Times, The New Yorker, and The Kenyon Review. It includes Allen's 1978 O...

, such as the reddening of the eye and/or pupil and cause itchiness. If such symptoms occur, it is best to see one's family doctor.