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To the Editor.
—We read with great interest the reports by the Silicone Study Group. From a statistical point of view, this work is one of the most important ever done in the field of modern surgery of retinal detachment associated with proliferative vitreoretinopathy, and we can only agree with the results. Nevertheless, two comments can be made.First, it seems difficult to analyze the results and complications of gas and silicone oil as internal tamponade without consideration for either the presence or the removal of the tamponade. The authors have planned a case-control study to compare eyes that underwent silicone oil removal with eyes that retained silicone oil. Since our opinion is that the ultimate goal of silicone oil injection is to remove the oil, it could be of greater interest to compare the results of eyes treated with gas injection with eyes that underwent silicone oil removal. We
Le Mer Y. Reports by the Silicone Study Group. Arch Ophthalmol. 1993;111(4):429. doi:10.1001/archopht.1993.01090040018007