Evaluation of Axial Length and Refractive Results in Patients Undergoing Phacovitrectomy Due to Dense Vitreous Hemorrhage: A Prospective Case Control Study

Abstract

Abstract Purpose: To evaluate the axial length (AL) measurement and refractive results in patients who underwent phacovitrectomy due to dense vitreous hemorrhage and to investigate the effectiveness of ultrasound (US) biometry in this patient group. Methods: In this single-center study, patients with cataract and dense vitreous hemorrhage (VH) who underwent combined phacovitrectomy procedure (Group 1) and patients with cataract who underwent phacoemulsification procedure as control group (Group 2) were included. AL and biometry were performed with US in group 1 and IOL Master 500 in group 2. Postoperatively, AL and biometry of the patients in group 1 were performed with both US and IOL Master 500. Main outcome measures were preoperative and postoperative AL measured by US and IOL Master and refractive outcomes including refractive prediction error (PE), and absolute prediction error (APE). Results: Median preoperative AL measured by US was 23.33 mm (I), median postoperative AL measured by IOL Master 500 was 23.18 mm (II), and median postoperative AL measured by US (III) was 23.44 mm in group 1 (p=0.04, I- II; p=0.01, I- III; p<0.01, II- III). Preoperative US and postoperative IOL Master 500, and preoperative US and postoperative US AL measurement showed a statistically significant strong positive correlation with a high-reliability coefficient. Median PE and APE were similar between the two groups (p=0.25, p=0.99, respectively). Conclusions: US biometry can be used easily, safely, and effectively in patients with dense vitreous hemorrhage with near the optimal refractive results.