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Shingles is the term we use to describe a condition that is caused by a re-activation of the Herpes Varicella-Zoster virus. The origin of this infection usually goes way back to childhood with a disease we know as chickenpox.

When you have a chickenpox infection your immune system manages to eventually suppress that virus from causing an active infection, but the virus does not get completely eliminated from your body--it is able to go and hide in your nerve roots.

Your immune system manages to keep the virus in check for most of your life but there may come a time in adulthood when your immune system is not working as well as it used to, and the virus can reappear. It...

Getting your eyes dilated can be inconvenient – dilation makes the eyes light sensitive which can make it difficult to read books or use phones and computers for a couple of hours.

So wouldn’t it be great to have another drop to reverse the effects of dilation?

On Dec. 31, 1990, dapiprazole, under the trade name Rev-Eyes, was approved by the FDA and thought to be the answer to all the post-dilation problems. It was marketed for treatment of medically-induced dilation by stimulating pupillary constriction and restoration of accommodative function for reading.

In clinical practice, dapiprazole took between one to two hours to return pupils to pre-dilation size.

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