Study Predictive Factors of vision problems and side effect of pars plana vitrectomy surgery in diabetic retinopathy

Abstract

Vitrectomy is one of the treatment modalities in patients with advanced retinopathy that proper selection of patients is of great importance in predicting surgical outcomes and the aim of this study was to evaluate the results of vitrectomy in advanced retinopathy as well as to determine the prognostic factors. Materials and Methods: The records of patients who had been treated for advanced retinopathy from 2013 to 2016 years were included. Demographic factors such as age, sex, duration of diabetes and history of hypertension were recorded. Preoperative visual acuity, history of laser therapy and history of avastin injection were recorded. Ophthalmologic examination including etiology, ocular pressure, intraocular hemorrhage, retinal cracking and macular status were recorded. Patients were examined at baseline and postoperatively in the first week, first month, and sixth months, which included visual acuity and pressure, as well as possible complications including endophthalmitis glaucoma, retinal detachment, and were recorded. Results: The mean age of the patients was 59.90±10.47 years. Of the 135 patients studied, 59 (45%) were male and 72 (55%) were female. 50 patients (37%) received avastin during surgery and 7 patients (5.2%) received avastin daily before surgery. Postoperative complication was seen in 53 (39.3%) patients. Significantly, the highest frequency of complications was related to optic nerve atrophy with frequency of 17 cases (12.6%) (p=0.001). The mean of patients visual acuity decreased significantly from 1.78±1.29 LogMAR to 0.15±0.12 LogMAR, indicating a significant improvement in patients' vision after surgery (p=0.003). Age (p=0.010), history of avastin injection (p=0.023), history of steroid administration (p=0.010), and Avastin during surgery (p=0.031) significantly improved patients' visual status. Is.