Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer. (27th December 2018)

• Record Type: Journal Article
• Authors: Lee, Jae Hyuck; Lee, Yong Woo; Lee, Jong Soo; Knorz, Michael C.; Auffarth, Gerd U.; Choi, Chul Young
• Other Names: Fernandes Paulo Academic Editor.
• Is Part Of: Journal of ophthalmology. Volume 2018(2018)
• Publication Date: 2018-12-27
• Subjects: Ophthalmology -- Periodicals; Eye Diseases; Ophthalmology; Ophthalmology; Electronic journals; Periodicals; Periodicals; Fulltext; Internet Resources; Periodicals; 617.7
• DOI: 10.1155/2018/6764805
• Languages: English
• ISSNs: 2090-004X

Abstract

Abstract : Purpose . To compare measurements of anterior and posterior keratometric values, using a color light-emitting diode corneal topographer and a dual rotating Scheimpflug–Placido topographer. Methods . Anterior and posterior corneal index measurements were performed using a color light-emitting diode corneal topographer (Cassini) and a dual rotating Scheimpflug–Placido topographer (Galilei G4) and then compared. The paired t -test, intraclass correlation coefficients (ICCs), and Bland–Altman plots were used to evaluate the agreement between measurements. Results . Sixty postrefractive surgery eyes and 60 normal eyes were evaluated. Both the color light-emitting diode corneal topographer and the dual rotating Scheimpflug–Placido topographer provided highly repeatable corneal measurements (ICC > 0.969). The agreement levels between the 2 devices for anterior corneal power, astigmatism magnitude, and J 0 and J 45 values were ICC > 0.906 for the total group. However, the ICC values for posterior corneal power, astigmatism magnitude, and J 0 and J 45 values were lower than 0.681 for the total group. Conclusions . The anterior keratometric values obtained by the color light-emitting diode corneal topographer and the dual rotating Scheimpflug–Placido topographer showed high agreement levels, but the posterior keratometric values showed lower agreement levels.