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LAURA MORALES-FERNANDEZ, Lara Borrego, Jose Martinez de la Casa, Federico Saenz-Frances, Julian Garcia-Feijoo, Hospital Clinico San Carlos, Glaucoma Department; Comparison of Rebound Tonometer Icare-Pro and Goldmann Handheld Applanation Tonometer in Congenital Glaucoma. Invest. Ophthalmol. Vis. Sci. 2013;54(15):5644.
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© ARVO (1962-2015); The Authors (2016-present)
To establish the reproducibility of the new rebound tonometer Icare-Pro, and its correlation with the Goldmann Handheld Applanation Tonometer (Perkins) in pediatric patients diagnosed with primary congenital glaucoma.
Using both tonometers, the IOP was prospectively determined in 78 eyes of 40 patients with congenital glaucoma examined under anaesthesia (short age: 8 to 88 months). Corneal curvature, central corneal thickness (CCT), and axial length were also measured in each patient.
There was a good correlation between IOP readings obtained by the GAT and the Icare-Pro (r= 0.796, p<0.001). ICare readings were midly higher than GAT measurements (mean IOP difference -0.36 + 3.95 mmHg, p=0.40). A Bland-Altman plot indicated the 95% limits of agreement between the two methods were 7.4 to -8.1 mm Hg (slope=0.017; p=0.919). In terms of pachymetry, in this group of patients, the two tonometers behaved in a similar way, without correlation observed between IOP measurements and central corneal thickness.
The new rebound tonometer Icare- Pro shows a high reproducibility and excellent correlation in their measurements with the Goldmann handheld applanation tonometer in children with congenital glaucoma.
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