Comparison of central corneal thickness measurements with the Galilei dual Scheimpflug analyzer and ultrasound pachymetry.
OBJECTIVE
To compare corneal pachymetry assessment by the Galilei dual Scheimpflug analyzer with that done by ultrasound (US) pachymetry.


METHODS
Forty six patients (92 eyes) were subjected to corneal pachymetry assessment by Galilei dual Scheimpflug analyzer and US. All the readings were taken by a single operator. Intraoperator repeatability for the Galilei was assessed by taking 10 readings in one eye each of 10 patients. To study the interoperator reproducibility for the Galilei, two observers took a single reading in both the eyes of 25 patients.


RESULTS
The mean central corneal thickness (CCT) measured by US was 541.83 +/- 30.56 microm standard deviation (SD) and that measured by Galilei was 541.27 +/- 30.07 microm (SD). There was no statistically significant difference between both the methods (P < 0.001). The coefficient of repeatability was 0.43% while the coefficient of reproducibility was 0.377% for the Galilei.


CONCLUSIONS
Objective, noncontact measurement of the CCT with the Galilei dual Scheimpflug analyzer was convenient, had excellent intraoperator repeatability and interoperator reproducibility, and findings were similar to those obtained with standard US pachymetry.
Ladi
Jeevan S
JS
Dada Laser Eye Institute, Pune, India.
Shah
Nitant A
NA
D003315:Cornea / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation* / Q000592:standards*; D006801:Humans; D015588:Observer Variation; D015203:Reproducibility of Results; D014463:Ultrasonography