Background: “Conventional” silicone oil floats upwards in the vitreous cavity. This results in a good tamponade of the upper retina, but leaves the lower retina without an effective tamponade. On the contrary, heavy silicone oil sinks and provides less effective support of the upper retina. In order to support both upper and lower retina double tamponade with perfluorocarbon liquid (PFCL) and silicone oil is used. There is a concern...

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