Congratulations to the winner of our April quiz, George Magrath, MD, Storm Eye Institute, Medical University of South Carolina, Charleston. The correct answer to our April challenge was septo-optic dysplasia (de Morsier syndrome). For a complete discussion of this case, see the Research Letters section in the May Archives (Kiernan DF, Al-Heeti O, Blair MP, et al. Peripheral retinal nonperfusion in septo-optic dysplasia [de Morsier syndrome]. Arch Ophthalmol. 2011;129:671-673).