Clinical Ophthalmology (Nov 2023)
Refractive Predictability of a Swept Source Optical Coherence Tomography Biometer in Long and Short Eyes Implanted with Extended Depth of Focus Intraocular Lenses
Abstract
Clayton Blehm,1 Brad Hall2 1Gainesville Eye Associates, Gainesville, GA, USA; 2Sengi, Penniac, NB, CanadaCorrespondence: Clayton Blehm, Gainesville Eye Associates, 2061 Beverly Road, Gainesville, GA, 30501, USA, Tel +1 770-532-4444, Email [email protected]: 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
