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Is it safe to use "Redness Relief" eye drops regularly?

The short answer is NO.

Here’s the slightly longer answer.

There are several eye “Redness Relief” products on the over-the-counter market, such as those made by Visine, Clear Eyes, and Bausch & Lomb - as well as generic versions sold by pharmacy chains.

Most commonly, the active ingredient in redness relief drops is either Tetrahydrozoline or Naphazoline. Both of these drugs are in a category called sympathomimetics.

Sympathomimetics, the active ingredient in redness relief drops, work though a process called vasoconstriction, an artificial clamping down of the superficial blood vessels on the eye surface. These blood vessels...

We have all heard the term ”Love is in the Air,” but did you know that love can be wonderfully expressed through the eyes?  Certain chemicals (or endorphins) that help produce the emotion of love can be emitted through emotions expressed in the eyes. There are physiological changes in the eyes that occur when love is expressed between two individuals. Love for a romantic partner, a family member, or a favorite pet can all cause the same physical response: the pupil (black part in the center of the eye) dilates.

The size of the pupil can be an indication of emotional responses and messages. According to Scientific American, the autonomic nervous system (ANS), which directs our fight...