Epidemiologic Assessment of Pars Plana Vitrectomy in Feyz Ophthalmology Center, Isfahan, Iran, during 2011 to 2015

Background: The aim of this study was to evaluate the epidemiological characteristics of deep vitrectomy surgery at the Feiz Ophthalmology center in Isfahan, Iran. Methods: This was a retrospective descriptive study on patients underwent deep vitrectomy in Feiz Medical Center during 2011 to 2015. Reviewing patients' medical records and information including demographic data was done and the data were analyzed. Findings: In this study, 2437 patients undergoing deep vitrectomy were reviewed, with a mean age of 54.25 ± 17.40 years, of them, 56.4% were men. 35.2% and 37.2% of patients had visual acuity of hand motion and counting fingers, respectively. Vitrectomy was performed in right eye in 49.2% of the patients. The most common cause of vitrectomy was proliferative diabetic retinopathy (35.3%), followed by retinal detachment (29.3%). 7.5% of patients had a history of previous vitrectomy. Conclusion: Deep vitrectomy surgery is common in ophthalmology centers and is more common in men, and in the age category of 50-70 years. Generally, proliferative diabetic retinopathy and retinal detachment were the most common causes of deep vitrectomy in this study.