I have a friend who was PAX on that flight. He told me that the pilot had lost peripheral vision and was advised to return to LHR. An additional inconvenience was that the standby pilot at LHR had "the wrong type of Covid test" for entry at Tel Aviv, thus requiring the pax to be overnighted at the Hilton Garden Inn. His journey resumed the following morning.
My opinion of the Laser user is unprintable.