Investigator no longer at university

Prospective, randomized, single site to determine the safety and effectiveness of performing corneal collagen cross-linking (CXL) using riboflavin and UVA light in eyes progressive keratoconus or corneal ectasia.

After epithelial surface removal riboflavin drops are applied until there is saturation of the cornea.Then the UVA light is turned on to active the crosslinking process while drops are continued for the 30 minute of lamp use to replenish the riboflavin.

Inclusion Criteria:

• Diagnosis of keratoconus with documented progression over the previous 12 months.
• Diagnosis of corneal ectasia
• Must be able to complete all study visits.

Exclusion Criteria:

• Prior corneal surgery in keratoconus group
• Corneal scarring
• Pregnancy