Clinical Ophthalmology (Nov 2022)
Comparison of Astigmatism Prediction Accuracy for Toric Lens Implantation from Two Swept-Source Optical Coherence Tomography Devices
Abstract
Robert F Melendez,1,2 Gerard Smits,3 Thao Nguyen,1 Chaselyn D Ruffaner-Hanson,1 Danielle Ortiz,2 Brad Hall4 1Juliette Eye Institute, Albuquerque, NM, USA; 2University of New Mexico School of Medicine, Department of Ophthalmology, Albuquerque, NM, USA; 3CSC, Inc., Santa Barbara, CA, USA; 4Sengi, Penniac, NB, CanadaCorrespondence: Robert F Melendez, Juliette Eye Institute, 6401 Holly Ave., NE, Albuquerque, NM, 87113, USA, Tel +1 505-355-2020 ; +1 505-235-4781, Email [email protected]: To compare the astigmatism prediction accuracy for toric intraocular lens (IOL) implantation between two swept-source optical coherence tomography (SS-OCT) devices: Argos (Movu, a Santec Company) and the IOLMaster 700 (Carl Zeiss Meditec).Methods: This was a retrospective chart review of 59 eyes (44 patients) with corneal astigmatism and cataract that underwent cataract surgery or refractive lens exchange surgery with a toric IOL. Biometry was performed on all patients prior to cataract surgery and the Barrett toric IOL calculator was used. Visual acuity was measured postoperatively. Manifest refraction was measured at 1 month and compared to the predicted postoperative residual refraction. Preoperative K measurements between devices were also compared.Results: Mean cylinder prediction error was − 0.17 ± 0.43 for Argos and 0.12 ± 0.56 for IOLMaster 700. The cylinder prediction error 0.5 D or less was not significantly different between the devices, with 83.1% (49 eyes) for Argos and 76.3% (45 eyes) for IOLMaster 700 (p = 0.206). Spherical equivalent prediction error was 0.13 ± 0.39 for Argos and 0.25 ± 0.50 for IOLMaster 700. The mean spherical equivalent prediction error 0.5 D or less was significantly different between the devices, with 79.7% (47 eyes) for Argos and 61.0% (36 eyes) for IOLMaster 700 (p = 0.016).Conclusion: The prediction accuracies were similar between the devices, except for spherical equivalent, where a higher percentage of eyes were 0.5 D or less of the prediction with the Argos compared to the IOLMaster.Keywords: Argos, IOLMaster 700, SS-OCT, prediction error
