Case ReportsBilateral Corneal Ring Opacity of Unknown OriginSilvestri, Alexandre M.D.; Boisjoly, Hélène M.D., M.P.H.Author Information From the Department of Ophthalmology, University of Montreal, Montreal, Quebec, Canada. Submitted June 4, 2002. Revision received September 13, 2002. Accepted September 17, 2002. The authors received no public or private financial support pertaining to the information published in this article. Presented in part at the annual meeting of the Canadian Ophthalmological Society, Toronto, Canada, June 2001. Address correspondence and reprint requests to Héléne Boisjoly, M.D., Hôpital Maisonneuve-Rosemont, 5689 boul. Rosemont, Montreal, Quebec H1T 2H1, Canada. E-mail: firstname.lastname@example.org Cornea: January 2003 - Volume 22 - Issue 1 - p 86-87 Buy Abstract Purpose. To report one case of a bilateral ring-shaped opacity in the mid-peripheral corneal stroma of unknown origin. Methods. Case report. Results. The authors describe the clinical history and ocular examination of an asymptomatic 82-year-old woman with a bilateral ring-shaped opacity located in the corneal stroma. This rare corneal anomaly was discovered by chance, and the etiology is unknown. Conclusion. An unusual bilateral corneal abnormality is reported. © 2003 Lippincott Williams & Wilkins, Inc.