Reliability of Measurements Using Ocular Response Analyzer… : Journal of Glaucoma
eliability when the ORA is used as a screening tonometer, and to compare CH measurements in eyes with and those without glaucomatous changes in the fundus. Patients and Methods: 1488 eyes of 747 patients (mean age: 53.5 ± 20.4 y, range: 6–94 y) underwent intraocular pressure (IOP) measurement using ORA as screening. The percentage of eyes with a waveform score ≥6, the recommended threshold indicating reliability, was calculated. Eyes that had waveform score ≥6 and had undergone fundus photography and optical coherence tomography were assessed for the presence or absence of glaucomatous changes in fundus from optical coherence tomography and fundus images, and CH was compared between the 2 groups. Results: Mean ± SD (range) of ORA measurements were: Goldmann-correlated IOP 14.9 ± 4.8 (1.0–63.2) mm Hg, corneal-compensated IOP 16.2 ± 4.7 (3.2–73.6) mm Hg, CH 9.7 ± 1.5 (0.0–20.6) mm Hg, and waveform score 7.3 ± 1.5 (0.1–9.7). Eighty-four percent of eyes had a waveform score ≥6. Among 192 e