Refractive Predictability of a Swept Source Optical Coherence Tomography Biometer in Long and Short Eyes Implanted with Extended Depth of Focus Intraocular Lenses

Abstract

Purpose

To determine the refractive predictability of Argos (Movu, a Santec company) measurements and the Barrett Universal II formula in long and short eyes implanted with an extended depth of focus (EDOF) intraocular lens (IOL).

Methods

This retrospective, non-interventional study included 86 eyes (55 long and 31 short) of 55 patients. Preoperative biometry was performed using the Argos. Preoperative IOL power formulas were the preprogrammed Barrett Universal II (BUII). Data were collected for refractive outcomes, postoperative prediction error (directional and absolute), and monocular corrected distance visual acuity (CDVA, Snellen).

Results

The mean absolute prediction error for BUII was 0.27 ± 0.26 D overall, 0.24 ± 0.20 D in long eyes, and 0.33 ± 0.33 D in short eyes. Overall, the percentage of eyes with ≤ 0.5 D prediction error was 84% for BUII. In long eyes, the percentage of eyes with ≤ 0.5 D prediction error was 90% for BUII. In short eyes, the percentage of eyes with ≤ 0.5 D prediction error was 74% for BUII. The percentage of eyes with ≤ 0.5 D of MRSE was 89% for long eyes and 94% for short eyes. Visual acuities were excellent in both long and short eyes, with > 90% of eyes 20/25 or better in each group.

Conclusion

The prediction error of Argos using BUII was low in long and short eyes at one month after EDOF IOL implantation.

Plain Language Summary

An intraocular lens (IOL) is an artificial lens that can be implanted in the eye to replace a natural lens that has become opaque. The power of the IOL must be carefully chosen for clear vision after implantation. Cataract surgeons use devices called biometers to measure the eye and calculate the most appropriate IOL power to implant. A novel biometer is available that may offer good accuracy, for predicting the IOL power, in eyes that are longer or shorter than average. The purpose of this study was to determine the refractive predictability of this biometer in long and short eyes implanted with an extended depth of focus (EDOF) IOL. The results of this study suggest that the refractive predictability was excellent in long and short eyes at one month after EDOF IOL implantation, resulting in great vision postoperatively.

Keywords:

• Argos
• biometry
• SS-OCT

Acknowledgment

This paper was presented at the 2023 American Society of Cataract and Refractive Surgery (ASCRS) Annual Meeting as a conference talk with interim findings.

Disclosure

Brad Hall reports that he has received consulting fees from Ace Vision Group outside the submitted work. The authors report no other conflict of interest for this work.

Additional information

Funding

This study was supported with an investigator-initiated study grant (75040681) from Alcon Vision, LLC, Fort Worth, TX, USA.