Vintage 1985 Military Army Eyeglasses Spring Bridge Metal Medical Doctor Glasses

We have never seen these types of glasses but from our research they appear to be special Army prescription glass for doctor or dentist that were used in the 1980s.  There is a spring nose bar that lets the lenses wrap around your face so they are snug. There is little chance of them falling off with the large earpiece designed to wrap around and hold them on.