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.
What Causes Eye Flickering: Eye flickering or eye twitching is quite common among people. 1  Usually, the bottom eye lid is the one that is involved in twitching, but quite often the top eye lid may also begin to twitch. 2  This flickering or twitching can be very annoying.