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Comparison of anterior segment measurements with a new optical biometer and rotating dual Scheimpflug analysis

Poster Details

First Author: E.Can TURKEY

Co Author(s):    M. Duran   T. Çetinkaya   N. Arıtürk        

Abstract Details


To compare the anterior segment measurements obtained with optical low-coherence reflectometry (OLCR) (AL Scan) and rotating dual Scheimpflug analysis (Galilei G2, version 5.2.1).


Comperative prospective study / Ondokuz Mayıs Univertisy, Samsun/Turkey


Comparisons of the following parameters were performed in patients who are candidate for cataract surgery and healthy volunteers from the clinic’s staff: Central corneal thickness (CCT), anterior chamber depth (ACD), white-to-white distance [WTW]), pupil diameter (PD), keratometry (K) readings at the steepest meridian (steep K) and the flattest meridian (flat K). Measurements were performed using a new OLCR device and rotating dual Scheimpflug analyzer. A P value less than 0.05 was statistically significant.


The study enrolled 72 eyes of 72 subjects. The CCT, ACD, WTW, PD measurements and K readings were significantly different between the 2 devices (P <0.05, paired Student t test). High correlations were obtained for all measurements with both devices.


Although highly correlated, the difference between 2 devices is clinically significant. The new OLCR device and the rotating dual Scheimpflug analyzer system can not be used interchangeably for any measurements and K readings.

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