Shay Keren1, Michael Waisbourd1, Nir Gomel1, Yael Cohen1, Shimon Kurtz2. 1. Division of Ophthalmology, Tel-Aviv Medical Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel. 2. Division of Ophthalmology, Tel-Aviv Medical Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel. shimonk@tlvmc.gov.il.
Abstract
PURPOSE: To investigate the effects of mental stress stimulus on intraocular pressure (IOP) measurement and visual field (VF) testing. METHODS: Patients with open angle glaucoma underwent a baseline IOP measurement and VF testing. Afterwards, they completed a computerized mental stress test (Stroop test) which is a known standardized method to induce mental stress. After test completion, patients underwent a second IOP measurement and VF testing. RESULTS: Seventy-two eyes of 36 patients were enrolled. Mean age was 67.0 ± 9.5 years (range 47-84 years). The mean baseline IOP was 15.0 mmHg, and after the Stroop mental stress test, IOP increased to 16.0 mm Hg (P < 0.001). There was a trend towards significant mean deviation decreased from -6.9 dB to -8.0 dB (P = 0.054, t-test) following the stress test. This difference became significant using the Wilcoxon nonparametric test (P = 0.008). Correlation was found between glaucoma severity and change in IOP (P = 0.02) and PSD (P < 0.01). CONCLUSIONS: We found a small but statistically significant increase in IOP and a trend towards deterioration of visual field mean deviation, following a short mental stress test. Patients with more severe glaucoma showed more pronounced changes. Our results suggest that mental stress could affect IOP measurement in the clinic.
PURPOSE: To investigate the effects of mental stress stimulus on intraocular pressure (IOP) measurement and visual field (VF) testing. METHODS: Patients with open angle glaucoma underwent a baseline IOP measurement and VF testing. Afterwards, they completed a computerized mental stress test (Stroop test) which is a known standardized method to induce mental stress. After test completion, patients underwent a second IOP measurement and VF testing. RESULTS: Seventy-two eyes of 36 patients were enrolled. Mean age was 67.0 ± 9.5 years (range 47-84 years). The mean baseline IOP was 15.0 mmHg, and after the Stroop mental stress test, IOP increased to 16.0 mm Hg (P < 0.001). There was a trend towards significant mean deviation decreased from -6.9 dB to -8.0 dB (P = 0.054, t-test) following the stress test. This difference became significant using the Wilcoxon nonparametric test (P = 0.008). Correlation was found between glaucoma severity and change in IOP (P = 0.02) and PSD (P < 0.01). CONCLUSIONS: We found a small but statistically significant increase in IOP and a trend towards deterioration of visual field mean deviation, following a short mental stress test. Patients with more severe glaucoma showed more pronounced changes. Our results suggest that mental stress could affect IOP measurement in the clinic.
Authors: Richard P Mills; Donald L Budenz; Paul P Lee; Robert J Noecker; John G Walt; Lisa R Siegartel; Stacy J Evans; John J Doyle Journal: Am J Ophthalmol Date: 2006-01 Impact factor: 5.258