Comparison of Intraocular Pressure Measurement with the Noncontact Pulsair 3000 Tonometer and Goldmann Applanation Tonometer

To compare intraocular pressure (IOP) measurement with Pulsair non-contact tonometer and Goldmann applanation tonometer (GAT).

In this cross-sectional study, during a complete ophthalmologic examination, each patient underwent Pulsair tonometry three times at 5 minutes intervals and then Goldmann tonometry at the same intervals. Mean IOP values were measured and analyzed.

We evaluated 458 eyes of 250 patients (138 males and 112 female subjects). Mean IOP was 19.45±9.04 mmHg with GAT and 20.11±8.42 mmHg with Pulsair (P=0.075). Correlation coefficient between the two methods was 0.96 (P= 0.004) and the mean difference (Pulsair-GAT) was 0.65±1.52 (confidence interval 95%, +3.5 to -2.29). With IOPs between 10-25mmHg, mean difference between the two methods was 0.49±1.23 (P= 0.32) mmHg, however it was -1.75±1.91 (P= 0.06) at IOPs over than 25 mm Hg.

Pulsair tonometry has acceptable accuracy in comparison with GAT, especially in IOP ranging from 10 to 25 mmHg