Accuracy of SS‐OCT biometry compared with partial coherence interferometry biometry for combined phacovitrectomy with internal limiting membrane peeling. Issue 1 (January 2019)

• Record Type: Journal Article
• Authors: Vounotrypidis, Efstathios; Haralanova, Velina; Muth, Daniel R.; Wertheimer, Christian; Shajari, Mehdi; Wolf, Armin; Priglinger, Siegfried; Mayer, Wolfgang J.
• Is Part Of: Journal of cataract and refractive surgery. Volume 45:Issue 1(2019)
• Publication Date: 2019-01
• Subjects: 617.7
• DOI: 10.1016/j.jcrs.2018.08.027
• Languages: English
• ISSNs: 0886-3350

Abstract

Abstract : Purpose : To evaluate the accuracy of a swept‐source optical coherence tomography (SS‐OCT) biometer compared with a standard partial coherence interferometry (PCI) biometer in terms of phacovitrectomy for vitreomacular pathology and cataract. Setting : Department of Ophthalmology, Ludwig‐Maximilians‐University Munich, Germany. Design : Prospective, nonrandomized, single center consecutive case series. Methods : Patients with age‐related cataract, regular corneal astigmatism less than 1.25 diopters (D) and a clinically significant vitreomacular pathology (epiretinal membrane [ERM], macular hole, or vitreomacular traction [VMT] syndrome) who had combined phacovitrectomy with internal limiting membrane peeling were enrolled. Objective and manifest refraction, corrected distance visual acuity, SS‐OCT biometry, and PCI biometry were obtained preoperatively and 3 months postoperatively. The refractive prediction error and mean absolute error (MAE) were calculated for each biometric device with the Haigis formula. The percentage of eyes with a prediction error within ±0.50 D or less were calculated. Results : The study comprised 79 eyes of 79 patients. The mean refractive prediction error of all eyes was −0.27 D ± 0.76 (SD) for the PCI biometer and −0.28 ± 0.57 D for the SS‐OCT biometer ( P = .802), and the MAE was 0.61 ± 0.53 D and 0.46 ± 0.43 D, respectively ( P = .012). A prediction error within ±0.50 D or less was observed in 55 eyes (70%) with the SS‐OCT biometer compared with 42 eyes (53%) with the PCI biometer ( P = .0001). The MAE with the SS‐OCT biometer was statistically significantly lower in eyes with ERMs or macular holes compared with the PCI biometer ( P = .043 and P = .028, respectively), whereas no statistically significant difference was observed in eyes with VMT syndrome ( P = .286). Conclusions : The SS‐OCT biometer showed a statistically significant lower MAE compared with the PCI biometer, and it is recommended for precise intraocular lens power calculations in combined phacovitrectomy for cataract and vitreomacular diseases.