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  • Title: Comparison of vitrectomy with brilliant blue G or indocyanine green on retinal microstructure and function of eyes with macular hole.
    Author: Baba T, Hagiwara A, Sato E, Arai M, Oshitari T, Yamamoto S.
    Journal: Ophthalmology; 2012 Dec; 119(12):2609-15. PubMed ID: 22921387.
    Abstract:
    PURPOSE: To evaluate the microstructure of the inner and outer retina and the visual function after macular hole (MH) surgery using brilliant blue G (BBG) or indocyanine green (ICG) to make the internal limiting membrane (ILM) more visible. DESIGN: Comparative, retrospective, interventional case series. PARTICIPANTS: Sixty-three eyes of 63 consecutive cases with MH were studied. Thirty-five eyes of 35 cases were treated with BBG between January and August 2011. Twenty-eight eyes of 28 MH cases were treated with ICG from April 2009 through April 2010. METHODS: Vitrectomy was performed with a 23-gauge system and 0.25 mg/ml BBG or with 0.125% ICG. MAIN OUTCOME MEASURES: The best-corrected visual acuity (BCVA) and the microperimetry-determined retinal sensitivity were measured at baseline and at 3 and 6 months after surgery. The length of the defect of the photoreceptor inner segment/outer segment (IS/OS) junction and external limiting membrane (ELM), the central foveal thickness (CFT), and the thickness of the ganglion cell complex (GCC) were measured in the spectral-domain optical coherence tomographic images. RESULTS: The average BCVA was significantly better in the BBG group than in the ICG group at 3 months (P = 0.021) and 6 months (P = 0.045) after surgery. The mean retinal sensitivity in the BBG group was improved significantly in the central 2° at 3 and 6 months (P = 0.001 and P = 0.030, respectively), but was not significantly improved in the adjacent 10°. The length of IS/OS junction defect was significantly shorter in the BBG group at 3 months (P = 0.048), but was not significantly different at 6 months (P = 0.135). The length of ELM defect and the GCC thickness were not significantly different between the 2 groups at 3 and 6 months. The CFT was significantly thinner in the ICG group than in the BBG group at 3 and 6 months (P = 0.013 and P = 0.001, respectively). CONCLUSIONS: The postoperative BCVA and retinal sensitivity in the central 2° were better in eyes after BBG-assisted vitrectomy. The restoration of IS/OS junction was faster in the BBG group, and the CFT was significantly thinner in eyes after ICG. Brilliant blue G may be a better agent than ICG to make the ILM more visible. FINANCIAL DISCLOSURE(S): The author(s) have no proprietary or commercial interest in any materials discussed in this article.
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