It is well known that the majority of ophthalmic surgeons are suspicious of the sterility of the ophthalmic solutions presented for use during the course of a surgical procedure on the eye and in the postoperative care. This skeptical attitude extends from the confines of the smallest community or private hospital to the marble halls of the greatest teaching institutions. It manifests itself by the dubious regard with which ophthalmic surgeons and surgical nurses view the varied assortment of dropper bottles present on the average eye-dressing tray. Praiseworthy attempts are regularly made to assure the sterility of such ophthalmic solutions by ordering frequent resterilization of those solutions commonly used in the surgical and postoperative surgical care of ophthalmic patients, particularly those who have undergone intraocular operations. However, from the moment a sterilized dropper bottle is opened its contents cease to be sterile. Post1 has pointed out that despite the