Level of Disagreement Between Proviewtrade mark Phosphene Tonometer and Goldmann Applanation Tonometer Intraocular Pressure Readings.

摘要

PURPOSE:: To evaluate the agreement of intraocular pressure (IOP) readings obtained with the Proviewtrade mark phosphene tonometer and those obtained by Goldmann applanation tonometry as well as the effect of regular use of the Proviewtrade mark on patients' anxiety about their glaucoma. METHODS:: One hundred thirty-five consecutive patients with glaucoma, 35 designated as controls, were enrolled in a 10-month randomized prospective clinical trial. The study patients but not the controls used the Proviewtrade mark outside the office. At office visits IOP was measured by an ophthalmologist with the Goldmann applanation tonometer (GAT) as well as by examiners and patients using the Proviewtrade mark. Patients in the treatment group (n = 100) were asked to measure and record their IOP at home as well. Using ANOVA, we examined the relationship between demographic variables and the level of agreement between the Proviewtrade mark readings and those measured by GAT at the final office visit. All participantsalso were asked to complete a questionnaire regarding their anxiety about their IOP at the baseline and final office visits. The primary outcome measure was the level of agreement of the Proviewtrade mark measurements with those obtained by GAT. Secondary outcome measures included patients' anxiety about their glaucoma. RESULTS:: The absolute mean difference between GAT and Proviewtrade mark readings at the final visit was 3.5 +/- 2.9 mm Hg (median, 2.8 mm Hg). The treatment group reported significantly less anxiety about their glaucoma after 4 to 6 weeks of using the Proviewtrade mark (P = .024). CONCLUSIONS:: There was considerable discrepancy between Proviewtrade mark and GAT readings. However, regular use of the Proviewtrade mark tonometer significantly reduced patients' anxiety about their glaucoma.