Fig. 12. Syphilis. A. Corneal ghost vessels as viewed by fundus reflex in a patient with congenital syphilis. B. Slit lamp appearance of interstitial keratitis. C. A blood vessel (arrow) present anterior to Descemet's membrane (d). D. Retrocorneal ridges of Descemet's membrane form refractile, branching straight lines. E. A multilayered strand extends from a thickened Descemet's membrane into the anterior chamber.(Courtesy of SEI Photoarchives.) (B Courtesy of Dr. W. C. Prayer; D and E from Waring GO, Font RL, Rodrigues MM et al: Alterations of Descemet's membrane in interstitial keratitis. Am J Ophthalmol 81:773, 1976.)