m
Recent Posts
Connect with:
Tuesday / August 9.
HomeminewsCaffeine Use May Offer Relief for Millions of Dry Eye Sufferers

Caffeine Use May Offer Relief for Millions of Dry Eye Sufferers

Researchers at the University of Tokyo’s School of Medicine have shown for the first time that caffeine intake can significantly increase the eye’s ability to produce tears. The finding could improve treatment of dry eye syndrome, which is common in people age 50 and older.

For many, dry eye syndrome is simply uncomfortable and annoying, but for others it escalates into a vision-threatening disease. All of the 78 participants in the new study produced significantly more tears after consuming caffeine than after taking a placebo. The study is available in Ophthalmology, the journal of the American Academy of Ophthalmology.

Dry eye syndrome involves malfunction of the rate of tear production, the quality of tears, and/or the rate of evaporate from the surface of the eye. Anyone can experience dry eye, though it is more common among women. Symptoms can include gritty, scratchy or burning sensations, excessive tearing, and/or production of stringy mucus.

The research team, by Reiko Arita, MD, PhD, was motivated by an earlier study that had shown a reduced risk for dry eye in caffeine users: 13 per cent of users had the syndrome compared with nearly 17 per cent of non-users. The team knew that caffeine was likely to stimulate tear glands, since it is known to increase other secretions, such as saliva and digestive juices. They also knew that people respond differently to caffeine, so they analysed study participants’ DNA samples for two genetic variations that play important roles in caffeine metabolism. Tear production proved to be higher in study subjects who had the two genetic variations.

“If confirmed by other studies, our findings on caffeine should be useful in treating dry eye syndrome,” said Dr. Arita. “At this point, though, we would advise using it selectively for patients who are most sensitive to caffeine’s stimulating effects.”

DECLARATION

DISCLAIMER : THIS WEBSITE IS INTENDED FOR USE BY HEALTHCARE PROFESSIONALS ONLY.
By agreeing & continuing, you are declaring that you are a registered Healthcare professional with an appropriate registration. In order to view some areas of this website you will need to register and login.
If you are not a Healthcare professional do not continue.