Corneal cross-linking is a minimally invasive procedure that strengthens the cornea to halt progression of conditions like keratoconus. It works by creating additional chemical bonds within the corneal collagen.
Procedure Steps
After removing or loosening the surface epithelium, riboflavin (vitamin B2) drops are applied to soak into the cornea, which is then exposed to controlled ultraviolet light. This interaction stiffens the corneal tissue.
- Typically performed under topical anaesthetic as a day-case
- Different protocols exist, including “epi-off” and “epi-on” approaches
- Goal is stabilisation rather than spectacle-free vision
- Can be combined with other treatments such as ring segments or topography-guided laser in selected cases
Aftercare and Results
Post-operative discomfort, light sensitivity, and temporary blur are expected while the surface heals. Most patients achieve long-term stabilisation of corneal shape, reducing the risk of further thinning or the need for transplant.
- Bandage contact lenses and drops help comfort and healing
- Vision may fluctuate for several weeks or months
- Regular topography checks monitor stability
- Best results are seen when treatment is performed early in disease progression
