Related Experiment Video
Updated: Jul 17, 2026
Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
Published on: September 16, 2025
Comparison of Proview phosphene tonometry with Goldmann applanation tonometry
Scott J Morledge-Hampton1, Robert O Kwon, Rohit Krishna
1Eye Foundation of Kansas City, University of Missouri-Kansas City School of Medicine, MO 64108, USA.
Background:
To compare intraocular pressures obtained using a handheld pressure phosphene tonometer (PPT) (Proview, Bausch & Lomb Pharmaceuticals, Inc., Tampa, Fla.) with Goldmann applanation tonometry.
Methods:
Comparative case series of 30 randomly selected patients.
Results:
The readings obtained with the pressure phosphene tonometer display a higher mean and a larger standard deviation than those obtained with the Goldmann applanation tonometer (GAT). Differences between PPT and GAT readings tended to decrease as a function of increased Goldmann levels. The relation of Proview and Goldmann readings (r = 0.32) and the scatterplot were not consistent with the hypothesis that the 2 methods are equivalent.
Interpretation:
Our results indicate that the pressure phosphene-type handheld tonometry method, which does not appear to provide an accurate and consistent measure of intraocular pressure, is substantially less reliable than the Goldmann method.
