WALTHAM, Mass.--(BUSINESS WIRE)--Avedro, Inc. announced today that the U.S. Food and Drug Administration (FDA) has granted orphan drug designation to the Company’s VibeX (riboflavin ophthalmic solution) for use with its KXL System (UVA irradiation) for Corneal Cross-linking to treat corneal ectasia following refractive surgery, such as Lasik and photorefractive keratectomy (PRK). Corneal ectasia is a rare outcome of refractive surgery but is a progressive condition that is difficult to manage. This is the company’s second orphan drug designation for VibeX.