Early on in the A4G Skyhawk era in the RAN FAA an old Sea Venom pilot (a time when LSOs were not used onboard HMAS Melbourne) made an approach to a successful arrest in his A4G. Immediately afterward the LSO realised that the mirror had not been uncovered during the approach. The Mirror Control Officer helper had not drawn back the metal shutter protecting it when not in use.
The old/bold pilot had called the ball (not being able to see it).
He likely had issues with his vision because he also wore glasses in flight; but not on deck/onboard to anyone's knowledge. Anyway the LSO jumped up and down during the debrief but being heavily outranked it was all a bit futile. This story was related by the chagrined MCO later.
ADDED: Mirro metal concertina shutter is open in this photo (dragged across to left to cover/protect mirror when not in use). Location now Fleet Air Arm Museum at NAS Nowra, NSW, Australia