Goldmann applanation tonometry and dynamic contour tonometry are not correlated with central corneal thickness in primary open angle glaucoma.
Dynamic contour tonometry readings were not correlated with central corneal thickness.
Goldmann applanation tonometry and dynamic contour tonometry are not correlated with central corneal thickness in primary open angle glaucoma.
To compare intraocular pressure (IOP) measured by Goldmann applanation tonometry (goldmann applanation tonometry) and dynamic contour tonometry (dynamic contour tonometry) and assess their relationship to central corneal thickness (central corneal thickness) in patients with primary open angle glaucoma (open angle glaucoma).
Goldmann applanation tonometry and dynamic contour tonometry were measured in a randomized order followed by central corneal thickness (ultrasonic corneal pachymetry) during a single study visit.
IOP values obtained by dynamic contour tonometry and goldmann applanation tonometry showed a strong positive correlation in patients with open angle glaucoma (r=0.93; P<0.001).
Mean IOP measured with dynamic contour tonometry [18.4 (5.1) mm Hg] was significantly higher (P<0.001) than goldmann applanation tonometry IOP measurements [16.5 (4.5) mmHg].
The Bland-Altman data showed that the amount of disagreement between IOP assessment techniques varied, suggesting a proportional bias.
In this group of patients with open angle glaucoma, there was a strong correlation between goldmann applanation tonometry and dynamic contour tonometry measurements of IOP.
IOP measured with dynamic contour tonometry was consistently higher than IOP measured with goldmann applanation tonometry.
Neither goldmann applanation tonometry nor dynamic contour tonometry measurements were correlated with central corneal thickness.
This data suggests that factors other than central corneal thickness may be involved in the tendency of dynamic contour tonometry to produce higher measures of IOP than goldmann applanation tonometry.