Prolonged use of topical anesthetic agents results in a toxic keratopathy with damage and inflammatory response in all corneal layers. The similarity of the clinical picture with infectious keratitis often leads to a delay in diagnosis and treatment. Consideration of topical anesthetic abuse in the differential diagnosis is crucial to prevent serious complications. In this paper, we report the in vivo confocal microscopic findings of two patients with toxic keratopathy secondary to topical anesthetic abuse.
Keywords: Topical anesthetic abuse, toxic keratopathy, in vivo confocal microscopy