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.
However, if you notice flashes of light in your vision or a sudden increase in the number of floaters in your vision, call your eye doctor immediately, as this could indicate a possible retinal tear or vitreous or retinal detachment.