Üç Farklı Speküler Mikroskopi Cihazı ile Ölçülen Korneal Endotel Parametrelerinin Karşılaştırılması: Karşılaştırmalı Klinik Çalışma

Abstract

Objective: The present study aimed to compare the Nidek CEM-530 (Nidek Co., Japan), Konan CellChek XL (Konan Medical, Hyogo, Japan), and Topcon SP-3000P (Topcon Corporation, Tokyo, Japan) noncontact specular microscopes (NCSM) in terms of endothelial cell density (ECD), morphological endothelial cell parameters, and central corneal thickness (CCT), in healthy subjects. Material and Methods: Right eyes of 49 patients were included in this study. ECD, CCT, average cell area, coefficient of variation, Standard deviation of cell area, cell hexagonality ratio were evaluated with Nidek CEM-530, Topcon SP-3000P and The CellChek XL NCSMs. Results: The mean age was 36.2±9.6 years. The mean ECD was 2809±24.1, 2626±50.4, and 2588±32.1 in measurements with Konan CellCheck XL, Topcon SP-3000P, and Nidek CEM-530 NCSMs, respectively. The difference was statistically significant between Konan CellCheck XL with Nidek CEM-530 and Topcon SP-3000P (p<0.001 for both). The hexagonality ratio results between these 3 devices were statistically significant in all paired comparisons (p<0.001, for all). The mean CCT was 534.4±5.0, 553.9±5.6, 567.5±5.3 in measurements with Nidek CEM-530, Konan CellCheck XL, and Topcon SP-3000P, respectively. CCT values obtained with Topcon SP-3000P were found to be higher than with other devices (p<0.001, for both). Conclusion: Among the 3 devices, the highest ECD values were obtained with Konan CellCheck XL and the highest CCT values were obtained with Topcon SP-3000P. On account of the discrepancies in endothelial parameters tested in our study, we do not advise using these devices interchangeably.