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 ...

Eye floaters are common, harmless specks caused by collagen clumps in the eye's vitreous, often appearing with age. While usually benign, a sudden inc ...

Rapid heart rate, fast breathing, and a sudden, overwhelming feeling of panic — anxiety can cause these physical and mental changes. Some people report other changes when their anxiety is high, namely ...

People have long reported seeing flashes of light during brain radiotherapy. Until now, no one has been able to capture evidence of this sensation in humans, and only theory, models, and speculation ...