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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 usually does this along the distribution of a single sensory nerve called a dermatome.
The most common area for this to occur is along your trunk (chest or abdomen) but it is also commonly found on the face.
There are three branches of nerves that supply sensation to your face. They are all branches of...

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.
Side effects such as stinging upon instillation, conjunctival hyperemia (redness of eye), headache, and a few instances of ptosis (lid drooping), with a possible additional dollar cost to patients, seemed to lessen dapiprazole’s overall clinical benefit.
Reading ability returned in approximately 43 minutes with...