Keratoconus is characterized by progressive primary corneal ectasia, resulting in decreased visual acuity in young adults and remains a leading indication for corneal transplantation surgery worldwide. Collagen crosslinking treatment of the cornea, pretreated with riboflavin drops, with UVA light has been described as a revolutionary new treatment that is effective in arresting the progression of keratoconus and results in corneal strengthening.
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