Clinical & experimental ophthalmology
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Clin. Experiment. Ophthalmol. · Dec 2004
Randomized Controlled Trial Comparative Study Clinical TrialComparison of the Tono-Pen and Goldmann tonometer for measuring intraocular pressure in patients with glaucoma.
To estimate agreement between measurement of intraocular pressure (IOP) by the Tono-Pen and by the Goldmann tonometer. The hypothesis tested was that the mean difference in measurements would be <-2 mmHg. ⋯ The Tono-Pen cannot replace the Goldmann tonometer in the sense that it will give the same readings of IOP. The accuracy of the Tono-Pen is increased, if at least two measurements are taken per eye and then averaged.