Intraoperative Corneal Thickness Changes during Pulsed Accelerated Corneal Cross-Linking Using Isotonic Riboflavin with HPMC

Table 1

Summary of central epithelial thickness changes.

CCT in microns	Mean	Standard deviation	Maximum	Minimum
Preoperative Pentacam CCT	514.9	±33.12	561	470
Preoperative USP CCT	506.85	±35.4	559	459
USP CCT after epithelial removal	474.9	±39.75	535	420
USP CCT after riboflavin	445.7	±31.18	508	400
USP CCT after UVA	444.65	±34.53	521	400

CCT: central corneal thickness, USP: ultrasound pachymetry, and UVA: ultraviolet.