Protecting the eyes from splinters and other flying objects during an air raid was the purpose of this type Goggles introduced in Britain in 1941.
Made of sheet Steel, the goggles are held in place by a strap. Holes approximately an inch in diameter cut in the metal permit good vision with moderate protection. In emergencies, circular plates of metal swing down over the eye holes. Cross slits cut in the plates then allow restricted vision, but with maximum protection to the eyes. Rubber padding under the cutout bridge and across the brows permits the goggles to be worn in comfort for a long time if necessary.
