Visine A.C. Eye Drops Review

Visine constricts the conjunctival blood vessels to reduce the redness; however, it's not recommended for long-term use.  It will result in a rebound effect, where the blood vessels dilate and your eyes will become more red. 

Red eyes is a sign of an underlying condition which should be addressed.  Conjunctival redness can be a result of dry eyes, allergies, infections, or inflammations.  First, you need to find the cause of the problem.  Then there are topical eye drops and/or systemic medications that can resolve those issues. 

Visine is just masking the systems and not curing the problem.