Congratulations to the winner of our March quiz, Massood Mohammadi, MD, Department of Ophthalmology, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. The correct answer to our March challenge was microsporidia keratitis. For a complete discussion of this case, see the Small Case Series section in the April Archives (Khandelwal SS, Woodward MA, Hall T, Grossniklaus HE, Stulting RD. Treatment of microsporidia keratitis with topical voriconazole monotherapy. Arch Ophthalmol. 2011;129:509-510).