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Abstract #24059 Published in IGR 11-3
Comparisons of intraocular pressure measurements: Goldmann applanation tonometry, noncontact tonometry, Tono-Pen tonometry, and dynamic contour tonometry
Hsu SY; Sheu MM; Hsu AH; Wu KY; Yeh JI; Tien JN; Tsai RKEye 2009; 23: 1582-1588
See also comment(s) by James Brandt •
Aims: To compare intraocular pressure (IOP) readings between Tono-Pen tonometry and GAT, between noncontact tonometry (NCT) and GAT, and between dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT). The correlation between IOP reading and possible confounder was identified. METHODS: This observational cross-sectional study enrolled sixty-two healthy subjects. All IOP and ocular pulse amplitude (OPA) measurements were taken by a single ophthalmologist; mean keratometric power (MK), central corneal thickness (CCT), and lens thickness (LT) were measured by a single experienced technician. RESULTS: Stepwise multiple regression analysis indicated that GAT (P=0.017) and DCT (P=0.002) readings correlated positively with MK; GAT, NCT, and Tono-Pen readings correlated positively with CCT (P<0.05); NCT (P=0.035), and DCT (P=0.016) readings correlated negatively with LT; GAT (P=0.006) and Tono-Pen (P=0.009) readings correlated positively with OPA. CONCLUSIONS: The K, CCT, LT, and OPA are confounders in tonometry readings.
Dr. S.Y. Hsu, Department of Ophthalmology, Buddhist Tzu Chi General Hospital, and Institute of Medical Sciences, Hualien 970, Taiwan
Classification:
6.1.1 Devices, techniques (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)
