Cornea Cross-Linking

Corneal cross-linking is a procedure used when the cornea is progressively thinning and bulging, most commonly in keratoconus or post-LASIK ectasia. The goal of cross-linking is not to improve vision directly, but to stop or slow further weakening of the cornea and prevent worsening vision or the need for a corneal transplant. It is typically recommended when there is clear evidence of progression, especially in younger patients.

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How corneal cross-linking works is by strengthening the corneal tissue. After the corneal surface is prepared, riboflavin (vitamin B2) drops are applied to the eye and then activated with ultraviolet (UV) light. This interaction creates new bonds between collagen fibers in the cornea, making it stiffer and more resistant to further deformation. The procedure is usually done in an outpatient setting, with temporary discomfort during healing, and while glasses or contact lenses are still often needed afterward, cross-linking is highly effective at stabilizing the cornea long term.