Additional file 1: of Effect of the retention ring-assisted continuous application of riboflavin in pulsed-light accelerated corneal collagen cross-linking on the progression of keratoconus Chung Young Kim Mee Kum Kim 10.6084/m9.figshare.7842737.v1 https://springernature.figshare.com/articles/figure/Additional_file_1_of_Effect_of_the_retention_ring-assisted_continuous_application_of_riboflavin_in_pulsed-light_accelerated_corneal_collagen_cross-linking_on_the_progression_of_keratoconus/7842737 Supplementary Figure S1. Riboflavin is contained inside a retention ring during the application for 10 minutes (A). A trephined silicone hydrogel bandage contact lens is applied during UV irradiation (B, C) (TIF 9431 kb) 2019-03-11 05:00:00 Cornea Keratoconus Corneal cross-linking (CXL) Accelerated cross-linking Pulsed-light Retention ring Riboflavin