Dynamic contour tonometry for intraocular pressure measurement.
OBJECTIVE
To compare dynamic contour tonometry as a new method for intraocular pressure measurement with Goldmann applanation tonometry.


METHODS
Clinical observational study.


METHODS
The study included 176 eyes of 126 subjects (39 eyes with open-angle glaucoma, 137 normal eyes) and consisted of 528 dynamic contour measurements and 352 Goldmann tonometry measurements. Corneal pachymetry measurements were additionally performed.


RESULTS
Mean dynamic contour tonometric measurements (18.71 +/- 5.90 mm Hg) were significantly (P < .001) higher than mean applanation tonometric values (16.98 +/- 5.86 mm Hg), correlating significantly with each other (r(2) = .905, P < .001). The slope of the regression line was 0.95. Correlation with central corneal thickness was significant for applanation tonometry (P = .036), while dynamic contour tonometry was statistically independent of corneal thickness (P = .32).


CONCLUSIONS
For measurement of intraocular pressure, dynamic contour tonometry may offer a new technology, which, compared with applanation tonometry, may show a lower dependence on central corneal thickness.
Kamppeter
Bernd A
BA
Department of Ophthalmology, Faculty for Clinical Medicine Mannheim, Ruprecht-Karls-University, Heidelberg, Germany. Bernd.Kamppeter@augen.ma.uni-heidelberg.de
Jonas
Jost B
JB
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005902:Glaucoma, Open-Angle / Q000503:physiopathology; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D014065:Tonometry, Ocular / Q000379:methods*