COMPARISION OF OCULAR BIOMETRY IN CATARACT PATIENTS USING TWO SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY DEVICES

To compare the ocular biometric measurements between 2 swept-source optical coherence tomography (SS-OCT) devices, IOL Master 700 and ANTERION.

Department of Ophthalmology, United Christian Hospital, Hong Kong

 

This retrospective study included all cataract patients who had their biometric measurements obtained with the 2 devices ANTERION and IOL master 700, between June and July 2021 at the United christian Hospital, Hong Kong. Patients scheduled for cataract surgery were measured with both SSOCT devices on the same day. The following biometry parameters were compared: keratometry (K), total keratometry (TK), central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT) and axial length (AL). To assess the agreement between the devices, intraclass coefficient (ICC) and Bland-Altman analysis with 95% limits of agreement (LoA) were used.

In total, 104 eyes of 52 subjects were measured with both devices. Average anterior keratometry showed an excellent agreement (ICC ≥ 0.983), and the mean difference was less than 0.1 D. The ICC of the total average keratometry showed excellent agreement (ICC ≥ 0.980) however the mean difference was more than 0.5D. The AL measurement showed excellent agreement (ICC = 0.996), with a mean difference of <0.006 mm. The CCT, ACD, and LT also showed excellent agreement (ICC > 0.9). The ANTERION did not obtain ACD, AL and LT in four cases (3.85%), four cases (3.85%) and seven cases (6.73%) respectively; and IOL master did not obtain ACD, AL and LT in two (1.92%) cases, respectively.

The SS-OCT based device ANTERION showed a good agreement with IOL master 700 in most biometric measurement except for total keratometry. It also has a greater failure rate in obtaining LT measurement. Although there is a good agreement with most of the biometry parameters, the devices should not be used interchangeably.