Piyacomn Y, et al. - In this retrospective non-comparative chart review, researchers sought to demonstrate changes in tomography, topometric indices and corneal densitometry following corneal refractive surgery in combination with crosslinking of collagen. The research was carried out at King Chulalongkorn Memorial Hospital, Bangkok, Thailand. They retrospectively reviewed all records of patients undergoing corneal refractive surgery with simultaneous collagen crosslinking during April 2015 and August 2018. Medical records of 14 patients (25 eyes) have been reviewed. According to findings, keratoconus index and central keratoconus index declined, while surface variance index, vertical asymmetry index, height decentration index and the minimum of the radius of curvature increased at all time points. The higher-order aberrations and corneal densitometry increased after the corneal refractive surgery combined with collagen crosslinking. There were conflicting outcomes in topographic indices.