Purpose: To analyze the variations in tear quantity and quality after corneal collagen cross-linking (CXL) in patients with keratoconus.
Methods: This is a prospective observational study of 24 eyes with keratoconus that underwent epithelium-off CXL. The variables studied were tear film osmolarity, subjective symptoms (Ocular Surface Disease Index), tear breakup time, Schirmer test (SCH) score, tear clearance, fluorescein staining, and lissamine green staining.