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- W2912450055 abstract "We thank Dr Goggin for bringing the vector analysis of astigmatism to our attention. Vector analysis provides a more precise measure of astigmatic changes because it takes both the magnitude and axis of astigmatism into account. For those patients with a shift in the axis of astigmatism, we agree that the percentage of reduction in astigmatism is greater than stated in our manuscript. We calculate that the mean reduction in astigmatism for 8 of 13 patients with an axis shift is 2.76±1.38 diopters using vector analysis and 2.44±1.35 diopters using linear analysis. The largest difference between the linear and vector analysis was 1.125 diopters. For the remaining 5 patients without a shift in astigmatic axis, the mean reduction is the same for both analyses. We thank Dr Goggin for bringing the vector analysis of astigmatism to our attention. Vector analysis provides a more precise measure of astigmatic changes because it takes both the magnitude and axis of astigmatism into account. For those patients with a shift in the axis of astigmatism, we agree that the percentage of reduction in astigmatism is greater than stated in our manuscript. We calculate that the mean reduction in astigmatism for 8 of 13 patients with an axis shift is 2.76±1.38 diopters using vector analysis and 2.44±1.35 diopters using linear analysis. The largest difference between the linear and vector analysis was 1.125 diopters. For the remaining 5 patients without a shift in astigmatic axis, the mean reduction is the same for both analyses. Astigmatism and Periocular HemangiomaOphthalmologyVol. 115Issue 10PreviewWeiss and Kelly1 are to be congratulated for putting some evidentiary flesh on the bones of the rationale for treatment of eyelid capillary hemangioma; however, they may have underestimated the effectiveness of their intervention when reporting 63% reduction of the astigmatism in eyes treated with intralesionsal corticosteroid. This figure seems to have been derived by subtracting the mean power of the remaining postoperative cylinder from the equivalent preoperative cylinder power (“the cylinder subtraction method”). Full-Text PDF" @default.
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- W2912450055 date "2008-10-01" @default.
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- W2912450055 doi "https://doi.org/10.1016/j.ophtha.2008.05.006" @default.
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