(screenshot from NBC news story)

Check out this segment Health Segment NBC's the Today show did the other day.  A picture a parent posted on Facebook has saved the vision of her 3 year old daughter.  A friend noticed something odd about the pic and suggested to the mother she have the daughter examined.  It may have been the most important call of the mom's life.  What was thought to be an effect from the flash turned out to be this condition.