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Comparison of two optical biometry based swept-source optical coherence tomography with a partial coherence interferometry

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Session Details

Session Title: Imaging Anterior Segment

Session Date/Time: Sunday 08/10/2017 | 16:00-18:00

Paper Time: 16:18

Venue: Meeting Center Room I

First Author: : J. Choi SOUTH KOREA

Co Author(s): :    C. Min Yang   H. Kim   D. Lim   T. Chung           

Abstract Details

Purpose:

To compare measurements and failure rates obtained with two new swept-source optical coherence tomography (SS-OCT) based optical biometry (ARGOS and IOLMaster 700) and partial coherence interferometry (IOLMaster) and to compare the accuracy of predicted refraction obtained with each biometer.

Setting:

Department of Ophthalmology, Samsung Medical Center, Seoul, Korea Sungkyngwan University School of Medicine

Methods:

143 eyes of 83 patients who scheduled to undergo cataract surgery were measured to evaluate the axial length (AL), anterior chamber depth (ACD), and anterior corneal radius of curvature (Rav) with three devices. Central corneal thickness and lens thickness measured with two SS-OCT based optical biometry were also compared. SRK/T formulas were used to calculate intraocular lens (IOL) power. The agreement was analyzed by the Bland-Altman method. Difference between predicted refractive error and postoperative refractive error were calculated for evaluating accuracy of predicted refraction error of each biometer.

Results:

AL, ACD and Rav values of each biometer did not show a statistically significant difference(p=0.627, p=0.340 and p=0.835, respectively). Two SS-OCT based optical biometry were shown higher acquisition rate of AL compared with Partial coherence interferometry. (IOLMaster 700: 97.9%, ARGOS: 97.9% and IOLMaster: 88.1%) Absolute refractive errors (│postoperative manifest refraction – predicted refractive error│) of operated eyes were not statistically different among each biometer. (ARGOS 0.35 ± 0.35 D, IOLMaster 700 0.38 ± 0.36 D and IOLMaster 0.44 ± 0.35 D, p=0.894)

Conclusions:

Each biometer provided good agreement for ocular parameter and IOL power predictions. However, it was easier to obtain axial length in eyes with severe posterior subcapsular cataract using two new SS-OCT based optical biometry,

Financial Disclosure:

NONE

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