• Ophthalmologe · Apr 2011

    [Rebound tonometry and applanation tonometry during narcosis investigation of pediatric glaucoma].

    • A Rosentreter, A M Schild, A Lappas, G K Krieglstein, and T S Dietlein.
    • Zentrum für Augenheilkunde, Universität zu Köln, Joseph-Stelzmann-Straße 9, 50931, Köln, Deutschland. andre.rosentreter@googlemail.com
    • Ophthalmologe. 2011 Apr 1;108(4):331-6.

    BackgroundA comparison of intraocular pressure (IOP) in cases of infantile glaucoma during general anesthesia was carried out by measurement with the iCare rebound tonometer (RBT) and a handheld applanation tonometer (Perkins).MethodsA total of 45 eyes from pediatric patients with childhood glaucoma were included in this prospective trial. Bland-Altman plots and linear regression were used for statistical analysis.ResultsIn almost two thirds of the eyes the difference between RBT and Perkins was 2 mmHg or less. A systemic bias of 1.96 mmHg and a 95% confidence interval of -3.35 to 7.26 was detected. Linear regression of the Bland-Altman data showed a proportional error (gradient=0.16; r(2)=0.23; p<0.01).ConclusionsThe iCare rebound tonometer is useful during general anesthesia in cases of childhood glaucoma. It provides comparable IOP values to applanation tonometry with a tendency to record higher values.

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