Are vision panels on old doors still compliant today if they are only 200mm from the bottom of the door? Should these doors be changed. They are on a corridors and I am concerned they might get damaged. We have no information on the doors.

If the doors are fire resistant they should be checked regularly (three-monthly in residential blocks over eleven metres in storey height) and any damage should be repaired.  The glazing system should be confirmed as fire resisting.