Endpoint
Cross-linking adverse event incidence
CAT:outcome/cross-linking-adverse-event-incidencereported in event rate
How it is measured
Proportion of eyes treated with corneal collagen cross-linking recording any complication or adverse event during follow-up — corneal haze, delayed epithelial healing, infiltrate, sterile keratitis or endothelial cell loss. Follow-up duration recorded with each finding.