University of Iowa Health Care

Ophthalmology and Visual Sciences

EyeRounds.org

Keratoconus

Contributor: Jesse Vislisel, MD

Photographer: Stefani Karakas, CRA

Keratoconus is a bilateral corneal ectasia characterized by central thinning and bulging of the cornea resulting in a cone-shaped protrusion. This patient demonstrates multiple characteristic signs of the condition. The top photo demonstrates central Vogt's striae, or parallel, vertical lines from posterior stromal stress. A Fleischer ring, or epithelial iron deposition around the base of the cone is visible superiorly. The horizontally-oriented opacities are areas of stromal scarring. The second photograph utilizes a slit beam to show the paracentral cone with associated stromal thinning. The third photograph shows more significant apical scarring in the contralateral eye. The bottom photograph shows protrusion of the bottom eyelid is downgaze due to the cone-shaped cornea.

keratoconus

keratoconus

keratoconus

keratoconus


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Ophthalmic Atlas Images by EyeRounds.org, The University of Iowa are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

last updated: 1/21/2015