Posters

Interocular symmetry analysis measured with swept-source technology

Poster Details

First Author: N.Garzón SPAIN

Co Author(s):    C. Albarrán-Diego   M. García-Montero   E. López-Artero   F. Poyales           

Abstract Details

Purpose:

To evaluate the symmetry of interocular biometric parameters in a large population with a biometer endowed with swept-source technology was employed.

Setting:

Miranza IOA, Madrid, Spain

Methods:

A total of 4097 patients—2519 female and 1533 male—were included in this study. Patients underwent consecutive swept-source optical biometry performed with an IOL Master 700 (Carl Zeiss Meditec AG, Jena, Germany). The biometric parameters that were evaluated were those that have been included in various IOL-power calculation formulas, including: Axial length (AL), mean anterior curvature (Rm), anterior chamber depth (ACD), crystalline lens thickness (LT), central corneal thickness (CCT) and white-to-white (W-W). The Chang–Waring chord distance (CWC-D) and the Chang–Waring chord angle (CWC-A) were also evaluated.

Results:

Results showed an excellent correlation (i.e., ICC ranging between 0.75 and 1.00) between the right eye and the left eye for all the biometric parameters under study, with the exception of the CWC. The linearity of the OD-vs-OS relationship can be correctly assumed for all parameters (Cusum test: p>0.05 in all cases). Regarding the CWC, the statistical analysis reveals OD-vs-OL differences for the CWC's x component and also for its y component (p < 0.001 for both coordinates).

Conclusions:

The data analyzed lead us to conclude that there are no clinically significant interocular differences for the biometric parameters under study. Regarding CWD, the results have revealed clinically significant differences although it must be said that they are related to enantiomorphism.

Financial Disclosure:

None