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KMID : 0385920090200020210
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Journal of the Korean Society of Emergency Medicine
2009 Volume.20 No. 2 p.210 ~ p.214
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A Study of the Tono-pen for Assessing Ocular Pressure in Patients with Headache Combined with Ocular Pain in the Emergency Department
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Kim Ho-Jung
Lim Hoon
Cho Young-Soon
Lee Dae-Wook
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Abstract
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A Study of the Tono-pen for Assessing Ocular Pressure in Patients with Headache Combined with Ocular Pain in the Emergency Department Dae Wook Lee, M.D., Young Soon Cho, M.D., Hoon Lim, M.D., Ho Jung Kim, M.D. Purpose: To study the use of the Tono-pen to estimate intraocular pressure (IOP) in patients with a headache combined with ocular pain in the emergency department (ED). Methods: We carried out a prospective, single-centre study comparing the Tono-pen to the Goldmann tonometer in 31 patients. The two methods were compared according to measured IOP and diagnosis, and the results were analyzed for correlations. Results: 31 patients (17 male, 14 female, mean age 51 years) were enrolled. The mean IOP according to the Tonopen and Goldmann were 19 mm Hg (95% CI: 14-25) and 18 mm Hg (95% CI: 12-23), respectively. The mean difference in measurement between the two was 1.8 mmHg. The 95% limits of agreement were -4.5 to 8.1 mmHg, and the correlation coefficient r was 0.976. In those patients with IOP≥25 mmHg, four (40%) were diagnosed of glaucoma. Conclusion: The Tono-pen was a very useful screening tool for patients presenting with headache combined with ocular pain in the ED.
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KEYWORD
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Intraocular pressure, Tono-pen, Goldmann
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