Pseudomonas keratitis is a devastating ocular infection that often results in loss of the eye unless it is treated within the first 24 to 48 hours. Among the variety of mechanisms by which the infection is introduced are infected foreign bodies, trauma, contaminated contact lens cleaning fluid,^1,2 burns of the eye,³ and immunosuppression from systemic illness. In some patients, usually elderly and debilitated persons, the Pseudomonas infection is idiopathic.⁴ I have treated a case of Pseudomonas keratitis originating from a source that, to the best of my knowledge, has not been reported previously-the patient’s own sputum.