German Corneal Cross Linking Register

Corneal Cross Linking is new treatment modality for patients with keratoconus. A keratoconus is characterized by progressive bulging and thinning of the eye's cornea. Keratoconus is a potentially severely sight impairing condition that may necessitate corneal transplantation in the progressive state. Corneal Cross Linking is designed to * increase the cornea's mechanical stability * to stop progression of bulging and thinning of the cornea * to prevent the need for corneal transplantation Corneal Cross Linking is performed by 1. Applying Riboflavin (Vitamin B2) eye drops every 2 minutes for 30 minutes to the cornea 2. Illuminating the cornea with UV-light This register of Corneal Cross Linking procedures performed in Germany serves to * gather long-term results * detect rare complications and side-effects * evaluate the efficacy in a large number of patients

Inclusion Criteria: * Patients diagnosed with keratokonus and treated with corneal cross Linking in Germany Exclusion Criteria: * Non-ectatic conditions