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LUIS ZARATE, Magdalena García-Huerta, Rafael Castañeda Diez, Mauricio Turati, Felix Gil Carrasco, Jesus Jimenez-Roman, Jose Paczka; COMPARATIVE AGREEMENT AMONG THREE METHODS OF TONOMETRY: GOLDMANN APPLANATION, TRANSPALPEBRAL, AND DYNAMIC CONTOUR. Invest. Ophthalmol. Vis. Sci. 2013;54(15):5660.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate agreement of intraocular pressure (IOP) as measured by the Goldmann applanation tonometer (GAT), the Pascal dynamic contour tonometer (DCT), and Diaton transpalpebral tonometer (DTT).
Device agreement was calculated by Bland-Altman analysis in 77 eyes of 40 individuals (mean age 58.9 ± 13 years) with a mixed diagnosis of glaucoma suspicion and primary open-angle glaucoma. All measurements were performed in a random order by the same clinician according to standard procedures.
Mean IOPs ± S.D. were 14.4 ± 2.9 mm Hg (GAT), 18.8 ± 3.2 mm Hg (DCT; P = 0.005, ANOVA), and 15.1 ± 3.1 mm Hg (DTT). Bland-Altman analysis demonstrated that, on average, DCT IOP measurements overestimated in approximately 3 mm Hg, values derived from GAT and DTT, although agreement was fairly good.
All methods of tonometry were adequate to measure IOP in our sample. Agreement among devices was considered good; nevertheless, DCT values of IOP were significantly higher as compared to the other two assessed methods.
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