Fig. 1

Pedigree and patients’ cornea OCT of the family of twins with KC. a Pedigree of the twins’ family. The proband is indicated by an arrow. b Slit lamp photographs of the twins’ family. The OD of II-1 was the post-operative photograph, and the rest were the pre-operative photographs. c OCT of patients’ corneas. The results showed high central corneal curvature and thinning of the corneal thickness in both eyes. OD, right eye. OS, left eye