Abstract
Objective To analyze the incidence, risk factors and visual outcome of macular edema after pars plana vitrectomy (PPV). Methods Fifiy-five eyes of 55 patients who underwent PPV were examined.The visual outcome and the macular thickness which was quantitatively measured by optical coherence tomography (OCT) was compared.The best corrected visual acuity, the central macular thickness, the edge macular thickness and the macular volume before and after operation were recorded. Results The average best corrected visual acuity (BCVA, logMAR) improved from 0.93±0.62 to 0.62±0.49 (t=8.67, P=0.000) at 1 month after surgery. The incidence rate of postoperative macular edema was 67.27%.The central macular thickness(t=-2.22, P=0.03), macular edge thickness(t=-2.25, P=0.03)and total macular volume(t=4.17, P=0.0001)of patients with an inflammation level under 2 were significantly reduced compared with those of patients with more than 3 inflammation level. Conclusion Postoperative macular edema is a common complication of PPV, and it affects the visual outcome. Minimizing the inflammation after the surgery might help to reduce the incidence rate of postoperative macular edema. Key words: Pars plana vitrectomy; Macular edema; Optical coherence tomography
Published Version
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