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Abstract #9153 Published in IGR 5-2
Effect of a tight necktie on intraocular pressure
Teng C; Gurses-Ozden R; Liebmann JM; Tello C; Ritch RBritish Journal of Ophthalmology 2003; 87: 946-948
AIM: To evaluate the effect of a tight necktie on intraocular pressure (IOP) measurement using Goldmann applanation tonometry. METHODS: Forty eyes of 20 normal subjects and 20 open angle glaucoma patients (all male) were enrolled. IOP was measured with an open shirt collar, three minutes after placing a tight necktie, and three minutes after loosening it. All measurements were made by the same examiner. RESULTS: Mean IOP in normal subjects increased by 2.6 (SD 3.9) mmHg (p = 0.008, paired t test; range -3 to +14 mmHg) and in glaucoma patients by 1.0 (1.8) mmHg (p = 0.02, paired t test; range -2 to +4.5 mmHg). In normal subjects, IOP in 12 eyes was increased by 2 mmHg and in seven eyes by 4 mmHg. In glaucoma patients, IOP in six eyes was increased by 2 mmHg and in two eyes by 4 mmHg. CONCLUSION: A tight necktie increases IOP in both normal subjects and glaucoma patients and could affect the diagnosis and management of glaucoma.
Dr. R. Ritch, Glaucoma Service, Department of Ophthalmology, The New York Eye and Ear Infirmary, 310 E 14th Street, New York, NY 10003, USA. ritchmd@earthlink.net
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
