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  • Title: The concentration-dependent effects of indocyanine green on retinal function in the electrophysiological ex vivo model of isolated perfused vertebrate retina.
    Author: Ranjbar M, Alt A, Nassar K, Reinsberg M, Schneider T, Grisanti S, Lüke J, Lüke M.
    Journal: Ophthalmic Res; 2014; 51(3):167-71. PubMed ID: 24642512.
    Abstract:
    BACKGROUND: Dye solutions such as indocyanine green (ICG) are used for the staining of intraocular structures. The aim of the presented study was to investigate the effects of ICG on bovine retinal function using different concentrations of ICG. METHODS: Bovine retina preparations were perfused with a standard solution and the electroretinogram was recorded. The nutrient solution was substituted by an ICG solution at varying concentrations for 45 min. Afterwards the preparations were reperfused with standard solution for at least 85 min. RESULTS: Significant reductions in b-wave amplitude were found for concentrations of 0.0025% (p = 0.0099) and 0.025% (p = 0.0378). For the concentration of 0.025%, the b-wave amplitude remained significantly decreased (p = 0.0082) after the observation period, but a full recovery of the b-wave was observed for the concentration of 0.0025% (p = 0.1917). CONCLUSION: Intraocular application of sufficient ICG concentrations for internal limiting membrane staining seems not possible without interfering with retinal function.
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