Unexpected flashes of light in your eye can be alarming, and in many cases, it’s something that should be discussed with your doctor as soon as possible. That said, these bright flashes are not always ...

Hallucinogen persisting perception disorder (HPPD) is a rare medical condition that can cause visual disturbances (sometimes called flashbacks) if you’ve taken hallucinogenic drugs in the past. With ...

Please provide your email address to receive an email when new articles are posted on . I did not serve as a physician in the military. When entering medical school at the University of Minnesota in ...

Dear Dr. Roach • I am a healthy 58-year-old female. One year ago, I was sitting on a friend’s porch when suddenly it was as if someone had poured thick oil over my left eye. After consulting with my ...