A 30-year-old woman presents with a painful red eye, blurred vision, and photophobia in her left eye for the past 3 days. She recalls accidentally getting dust in her eye while gardening. On examination, there is a white, feathery corneal opacity and conjunctival injection. Fluorescein staining reveals a corneal epithelial defect. She denies wearing contact lenses. Question: Which of the following is the most likely causative organism?
