Macular Edema Formation and Deterioration of Retinal Function after Intravitreal Bevacizumab Injection for Proliferative Diabetic Retinopathy

• Main Authors: Hisanori Imai, Shigeru Honda, Yasutomo Tsukahara, Akira Negi
• Format: Article
• Language: English
• Published: Karger Publishers 2011-09-01
• Series: Case Reports in Ophthalmology
• Subjects: Anti-vascular endothelial growth factor; Bevacizumab; Avastin; Multifocal electroretinography; Full-field electroretinography; Diabetic retinopathy; Optical coherence tomography; Macular edema
• Online Access: http://www.karger.com/Article/FullText/332830
• ISSN: 1663-2699

Purpose: To report a case of proliferative diabetic retinopathy (PDR) showing transient macular edema (ME) and deteriorated retinal function after intravitreal bevacizumab injection (IVB). Methods and Results: A 53-year-old man received IVB (1.25 mg/0.05 ml) in both eyes for the treatment of PDR. There was no treatment-related complication. However, he complained of photopsia in both eyes 6 h after the injection. Slit-lamp examination revealed mild cellular infiltrations (1+) in the anterior chamber in both eyes. Optical coherence tomography showed ME formation in the left eye. Both full-field and multifocal electroretinography (ERG) revealed the deterioration of all parameters in both eyes compared with pretreatment. The inflammation in the anterior segment and ME disappeared 1 day after the injection. ERG parameters were improved 9 days after the injection, except for the N1 and P1 amplitude of multifocal ERG in the left eye. Conclusion: We propose that patients who undergo IVB should be carefully informed and followed up for possible complications including temporal ME formation and retinal function deterioration.