An Overly Tight
Neck Tie Increases Risk of Glaucoma
Wearing your necktie tight might look smart,
but it could increase the risk of developing the
serious eye disease glaucoma, reveals a study in
the British Journal of Ophthalmology.
The researchers tested the internal blood pressure
(intraocular pressure) of one eye in each of 20
healthy men and 20 male patients with glaucoma.
They did this when participants wore an open shirt
collar, three minutes after donning a tight necktie,
and three minutes after loosening their ties. The
healthy men tended to be younger than those with
glaucoma.
Sixty per cent of men with glaucoma and 70% of the
healthy men experienced an increase in internal
eye blood pressure after wearing a tight necktie
for three minutes; there were no differences between
the two groups before necktie tightening and after
necktie loosening. The increases ranged from more
than 2 mm Hg to more than 4 mm Hg. Men of all ages
were affected.
Raised internal eye blood pressure is the most important
known risk factor for the development and progression
of glaucoma, say the authors. But the effect of
wearing a tight neck tie while undergoing an eye
test could also lead to a false diagnosis of high
intraocular pressure or even glaucoma itself, caution
the authors, particularly in men with thick necks,
they say. They speculate that a tight neck tie constricts
the jugular vein, which raises venous pressure,
which in turn raises intraocular pressure. Looser
neck ties, and no ties at all when taking an eye
test, would help?. Effect of a tight necktie on
intraocular pressure. BMJ 2003; 87: 946-8
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