J Korean Ophthalmol Soc.  2015 Oct;56(10):1520-1526. 10.3341/jkos.2015.56.10.1520.

Central Corneal Thickness Measured by Noncontact Specular Microscopy, Dual Rotating Scheimpflug Camera and Ultrasound Pachymetry

Affiliations
  • 1Department of Ophthalmology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea. goddns76@hanmail.net

Abstract

PURPOSE
To compare central corneal thickness (CCT) as measured using noncontact specular microscopy (NCSM), dual rotating Scheimpflug camera (Galilei(R)), and ultrasound pachymetry (USP).
METHODS
The measurements of CCT using NCSM, dual rotating Scheimpflug camera and USP in 70 eyes of 70 healthy subjects were compared.
RESULTS
The average measurements of CCT using NCSM, dual rotating Scheimpflug camera, and USP were 567.70 +/- 31.21 microm, 557.84 +/- 26.29 microm, and 553.31 +/- 29.69 microm, respectively. The CCT measurement using NCSM was statistically significantly thicker than when measured using USP (p < 0.05). There was no significant difference between the NCSM and dual rotating Scheimpflug camera (p = 0.138). Additionally, there was no significant difference between the dual rotating Scheimpflug camera and USP (p = 0.656). A significant linear correlation was observed among the NCSM, dual rotating Scheimpflug camera, and USP (r > 0.900, p < 0.001).
CONCLUSIONS
The results of the 3 methods were significantly correlated but the measurement using NCSM was significantly thicker than when using USP. CCT measurements of healthy eyes using dual rotating Scheimpflug camera were more correlated with USP than NCSM. The CCT measurements using dual rotating Scheimpflug camera is a better alternative for USP than NCSM.

Keyword

Central corneal thickness; Dual rotating Scheimpflug camera; Noncontact microscopy; Ultrasound pachymet

MeSH Terms

Microscopy*
Ultrasonography*
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