evidence to the contrary. Please don't tell me you think that any human pupil would be fast enough to properly respond to an electronic flash, we are talking sub milliseconds here.
If flash was a problem for newborns, we'd have a whole generation of blind people by now. Think about all these gazillions of P&S cameras used every day by their loving relatives at very close range to fill the frame. These pics are frequently overexposed because the cameras can't even tune down their flash enough for proper exposure.