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F. N. Kanadani, T. C. A. Moreira, F. H. Melo, V. N. Souza, P. N. Souza, L. R. Vilela, W. D. Batista, S. Dorairaj; The 30 Degree Inverted Position Test vs. Diurnal Curve Test in Normals, Suspects and Glaucoma Patients. Invest. Ophthalmol. Vis. Sci. 2009;50(13):2475.
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© ARVO (1962-2015); The Authors (2016-present)
To compare the diurnal curve test (DC) with the 30-degree inverted body position test on intraocular pressure (IOP) in normal patients, suspected glaucoma patients, and glaucoma patients
Based on clinical evaluation of the optic disc, IOP, and standard achromatic perimetry (SAP) of 79 eyes, 18 were "normal" (normal SAP and optic disc evaluation, and IOP < 21 mmHg), 30 were "glaucoma suspect" (GS; normal SAP, cup/disc (C/D) ratio > 0.5 or asymmetry > 0.2 and/or ocular hypertension), and 31 had "early glaucoma" (MD < -6 dB, glaucomatous optic neuropathy). SAP was performed with the Octopus 3.1.1 Dynamic 24-2 program. Six IOP measurements were performed at 6AM, 9AM, 12PM, 3PM, 6PM and 9PM. In the 30-degree inverted position, IOP measurement with Perkins applanation tonometer was taken after five minutes lying down.
There was no difference between peak IOP on DC and inverted position IOP in normal patients (p=0.06). In suspected glaucoma patients (p=0.003) and glaucoma patients (p=0.008) IOP measurements were lower in the DC test in comparison to the inverted position test.
The 30-degree inverted position test showed higher IOP values in suspected glaucoma and glaucoma patients. This new provocative test is easier, faster and more comfortable for both patients and doctors.
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