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Marcelo Hatanaka, Luciana M. de Alencar, Mirko Babic, Remo Susanna, Jr.; Reproducibility of Intraocular Pressure Fluctuation During the Diurnal Tension Curve. Invest. Ophthalmol. Vis. Sci. 2012;53(14):5053.
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To verify the reproducibility of intraocular pressure (IOP) fluctuation during diurnal tension curves (DTCs) of ocular hypertensive (OH) and primary open-angle glaucoma (POAG) patients not under topical treatment.
Prospective analysis of 88 eyes from 88 OH and POAG patients submitted to two consecutive DTCs (IOP measurements obtained at 8:00AM, 11:00AM, 2:00PM, 4:00PM). IOP fluctuation was calculated using two different approaches: the difference between maximum and minimum IOP detected during each DTC and as the standard deviation of all four IOP measurements obtained from each DTC. Reproducibility was assessed using the intraclass correlation coefficient (ICC).
Test and retest mean IOP fluctuation calculated as the difference between maximum and minimum IOP were 3.58±2.4 and 3.44±2.1, respectively (ICC = 0.60, p<0.001). Test and retest fluctuation calculated by means of standard deviation were 1.64±1.05 and 1.57±0.91, respectively (ICC = 0.62, p<0.001).
In this study, IOP fluctuation during the diurnal tension curve presented fair reproducibility.
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