TY - JOUR
T1 - Test - Retest variability of intraocular pressure and ocular pulse amplitude for dynamic contour tonometry
T2 - A multicentre study
AU - Fogagnolo, Paolo
AU - Figus, M.
AU - Frezzotti, P.
AU - Iester, M.
AU - Oddone, F.
AU - Zeppieri, M.
AU - Ferreras, A.
AU - Brusini, P.
AU - Rossetti, L.
AU - Orzalesi, N.
PY - 2010/4
Y1 - 2010/4
N2 - Aims: To assess the test - retest variability of intraocular pressure (IOP) and ocular pulse amplitude (OPA) measurements utilising dynamic contour tonometry (DCT) and to evaluate possible influential factors. Methods: The study included 350 consecutive subjects (175 glaucoma, 175 control; one eye per subject) from seven European centres. IOP was measured once with a Goldmann applanation tonometer (GAT) and twice by DCT (DCT1, DCT2) in a randomised sequence. OPA was also recorded for both DCT measurements. Differences (DCT1-DCT2; OPA1-OPA2; GAT-DCT1; GAT-DCT2) were assessed using the t test. The intraclass coefficient of correlation (ICC) and coefficient of variation (CoV) for DCT and OPA were calculated. Results: DCT1 was 0.661.6 mmHg higher than DCT2 (p0.90 and >0.76, and CoV=4.8-5.0% and 10.3-10.5%, respectively. DCT1 and 2 were 2.4±2.6 and 1.8±2.6 mm Hg higher respectively than GAT (p
AB - Aims: To assess the test - retest variability of intraocular pressure (IOP) and ocular pulse amplitude (OPA) measurements utilising dynamic contour tonometry (DCT) and to evaluate possible influential factors. Methods: The study included 350 consecutive subjects (175 glaucoma, 175 control; one eye per subject) from seven European centres. IOP was measured once with a Goldmann applanation tonometer (GAT) and twice by DCT (DCT1, DCT2) in a randomised sequence. OPA was also recorded for both DCT measurements. Differences (DCT1-DCT2; OPA1-OPA2; GAT-DCT1; GAT-DCT2) were assessed using the t test. The intraclass coefficient of correlation (ICC) and coefficient of variation (CoV) for DCT and OPA were calculated. Results: DCT1 was 0.661.6 mmHg higher than DCT2 (p0.90 and >0.76, and CoV=4.8-5.0% and 10.3-10.5%, respectively. DCT1 and 2 were 2.4±2.6 and 1.8±2.6 mm Hg higher respectively than GAT (p
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U2 - 10.1136/bjo.2009.165142
DO - 10.1136/bjo.2009.165142
M3 - Article
C2 - 19833616
AN - SCOPUS:77950838766
VL - 94
SP - 419
EP - 423
JO - British Journal of Ophthalmology
JF - British Journal of Ophthalmology
SN - 0007-1161
IS - 4
ER -