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Abstract #21270 Published in IGR 10-2
Preliminary report on use of dynamic contour tonometer in clinic
Wang J; Zhou H-Z; Yang F; Zeng BInternational Journal of Ophthalmology 2008; 8: 519-521
AIM: To validate the clinical natures of dynamic contour tonometer (DCT). METHODS: Intraocular pressure (IOP) obtained by DCT on 143 eyes of 81 patients who were diagnosed glaucoma or suspected glaucoma; 132 eyes had a measurement of IOP by Goldmann Applanation Tonometer (GAT) simultaneously. Otherwise, central cornea thickness (CCT) was measured by NIEDK UP-1000 on some eyes. The IOP measurements of DCT and GAT were compared by paired-samples t-test. The relationship of DCT-CCT, GAT-CCT and DCT-OPA (ocular pulse amplitude) adopted the Spearman bivariate analysis. RESULTS: There was a positive correlation between the IOP readings obtained by DCT and GAT (r = 0.83, P < 0.01). However, IOP readings were consistently higher with DCT than those with GAT (mean difference: 1.1 ± 2.3 mmHg). 116 eyes underwent DCT and CCT measurements (r = 0.03, P = 0.77) while 113 eyes underwent GAT and CCT measurements simultaneously (r = 0.28, P = 0.003). The ocular pulse amplitude (OPA) readings had a significant correlation with IOP readings by DCT (r = 0.32, P < 0.01). CONCLUSION: IOP measurements by DCT are highly correlated with IOP readings obtained from GAT but have no correlation with CCT. DCT has unique advantages in the diagnosis of glaucoma and DCT seems to be appropriate method of tonometry for routine clinical use. LA: Chinese
Dr. H.-Z. Zhou, Department of Ophthalmology, Wuhan General Hospital, Guangzhou Military Command, Wuhan 430070 Hubei Province, China. Zhou_h_z@sina.com
Classification:
6.1.1 Devices, techniques (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)