Symptoms of heart palpitations may include a passing sensation of a pounding, rapid, fluttering, or skipped heartbeat. These sensations are usually felt in the chest but may also be felt in the neck and/or the throat. Generally, there are 2 broad types of palpitations.
Flashes of light that appear as jagged lines or heat waves in both eyes, often lasting 10-20 minutes, are different. They are usually caused by migraine, a spasm of blood vessels in the brain.
Corneal flash burns. The clear front of the eyes, called the cornea, can be damaged by over exposure to ultraviolet radiation from the sun and from other light sources, such as a welderâs arc or camera flash. These injuries are called corneal flash burns or ultraviolet keratitis, and is like a form of sunburn to the surface of the eye. Corneal flash burns can cause pain, changes in vision or loss of vision. Radiation damage to the cornea leading to a flash burn can be caused by ultraviolet light from various sources: Sunlamp in tanning salon. Reflection of the sun off the snow at high elevation (snow blindness) Photographerâs flood lamp. Lightning that strikes close to you.