 Working with her friend, Davidine Pullinger, and the biochemist, Antoinette Pirie, she worked out the entire pathology of mustard gas keratitis, which afflicted soldiers from the First World War some ten to fifteen years after they had survived a mustard gas attack.Although the team did not find a cure, they were able to alleviate symptoms through the use of contact lenses.During the war, honorary staff were not allowed to resign from their posts at civilian hospitals.