I have been diagnosed with shingles on the top of my head on the right side. I noticed a red bump on Friday, the following Tuesday I started taking acyclovir. The blister on top of my head has not grown but I have sharp pains in my right eye. My eye is swelled up but not terribly bad. When I sleep or keep my eye closed the sharp pains are almost non existent and it seems like bright light irritates it as well. Any ideas or recommendations.