An African American woman in her 50s presented for recent-onset blurred vision in both eyes for 2 months. She endorsed mild photophobia but denied pain, redness, tearing, or discharge. There was no history of oral/genital ulcers, rashes, or atopy. Her medical history was significant for hypertension, asthma, hepatitis C, and essential tremor. Her medications include lisinopril, albuterol sulfate, and amantadine hydrochloride. She denied any previous ocular surgical procedures or trauma. She was seen 2 weeks prior and was treated with 400 mg of oral acyclovir sodium 5 times a day and sodium chloride, 5%, ointment 4 times a day. Her central corneal thickness at that time was recorded at 798 μm OD and 827 μm OS.