Visine is a brand of eye drop

Eye drop

Eye drops are saline-containing drops used as a route to administer medication in the eye. Depending on the condition being treated, they may contain steroids, antihistamines, sympathomimetics, beta receptor blockers, parasympathomimetics, parasympatholytics, prostaglandins, non-steroidal...

s produced by Johnson & Johnson

Johnson & Johnson

Johnson & Johnson is an American multinational pharmaceutical, medical devices and consumer packaged goods manufacturer founded in 1886. Its common stock is a component of the Dow Jones Industrial Average and the company is listed among the Fortune 500....

. Johnson & Johnson acquired Visine, along with Pfizer

Pfizer

Pfizer, Inc. is an American multinational pharmaceutical corporation. The company is based in New York City, New York with its research headquarters in Groton, Connecticut, United States...

's entire consumer healthcare portfolio, in December 2006.
The active ingredients in the original Visine formulation are potassium chloride

Potassium chloride

The chemical compound potassium chloride is a metal halide salt composed of potassium and chlorine. In its pure state, it is odorless and has a white or colorless vitreous crystal appearance, with a crystal structure that cleaves easily in three directions. Potassium chloride crystals are...

 and tetrahydrozoline hydrochloride which is a vasoconstrictor, and therefore constricts 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...

's superficial blood vessels to "get the red out", as claimed in Johnson & Johnson's advertising http://www.pfizerch.com/product.aspx?id=330.
Visine is administered topically with 1 to 2 drops applied to the affected eye(s) up to 4 times daily http://www.pfizerch.com/product.aspx?id=330.

• Those using Visine Original frequently report stinging and burning upon application.

• Use of this product can cause a rebound effect causing the redness to worsen.