If any injury that may occur would be serious, greater care will be needed than if the risk of injury was slight. Thus in Paris v Stepney Borough Council [1951] AC 367 the claimant had only one good eye, a fact known to his employers, the defendants. Despite this, no protective goggles were provided and he became blind when a piece of metal went into his good eye. The House of Lords held that the defendant was liable. Although the risk of injury was small, the consequences of the injury were significant.