Front panel of panoramic sunroof "exploded" into the vehicle while traveling on interstate without any sign of a projectile or rock hitting the vehicle. Outdoor temperature was -3 degrees Fahrenheit with indoor temperature set to 75 degrees Fahrenheit. Glass rained down into the vehicle, startling the driver (myself) and passengers. One piece of tempered glass went into one rear seat passenger's eye and was successfully removed without extensive injury. Reported incident to Ford Dealer and had dealer service department inspect the vehicle. Attempted to have it repaired under manufacturer warranty. Coverage was declined from the manufacturer (Ford) and was subsequently repaired via personal comprehensive vehicle insurance. There was no indication of an issue with the vehicle prior to incident. It is concerning this happened without warning and we were lucky to have not gotten into an accident following the event.