Vessel constrictor: Vasocon is an otc vasocontrictor drop, which will temporarily constrict dilated ocular surface blood vessels and make the eye look "whiter". The effect wears off after a few hours, and it may be necessary to use the drops more and more to achieve the desired effect after a time. If your eyes are always irritated and look "bloodshot", it is best to see an eye md for diagnosis and advice.
Answered 2/17/2015
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