WARNING - Seizures
Some people (about 1 in 4000) may have seizures or blackouts triggered by light flashes or patterns.
Even people who have no history of seizures or epilepsy may have an undiagnosed condition that can cause these "photosensitive epileptic seizures".
These seizures may have a variety of symptoms, including lightheadedness, altered vision, eye or face twitching, jerking or shaking of arms or legs, disorientation, confusion, or momentary loss of awareness. Seizures may also cause loss of consciousness or convulsions that can lead to injury from falling down or striking nearby objects.
Anyone who has had a seizure, loss of awareness, or other symptom linked to an epileptic condition should consult a doctor before using the Flashlight strobe feature.
The Flashlight app (for iPhone, iPod touch, and iPad) contains a strobe light option.