Review Question - QID 214787

A 25-year-old man presents to the emergency department for right eye pain. A few hours prior to presentation the patient was cleaning his backyard. After placing a metal crate full of wood and rocks onto the ground he felt a small object fall into his right eye. Since then, he has been unable to open his eye due to pain. He does not wear glasses or contact lenses and has no other medical history. His temperature is 98.6°F (37.0°C), blood pressure is 125/70 mmHg, pulse is 80/min, and respirations are 13/min. On physical exam, there is conjunctival erythema and upper eyelid edema. His right pupil appears miotic but is reactive to light. He has a visual acuity of 20/20 in the left eye and 20/30 in the right eye. Ophthalmology is consulted, and there is evidence of a corneal abrasion appreciated with fluorescein dye. Topical anesthesia is applied to the right eye, and the patient undergoes irrigation. Which of the following is most likely to be found on microbiological testing of the corneal foreign body?