An experimental antibacterial coating could enable contact wearers to leave lenses in their eyes for as long as 3 months.
The new coating contains selenium, an element that produces chemical groups called superoxide radicals that kill bacteria, says Ted Reid of Texas Tech University Health Sciences Center in Lubbock, who presented the findings in Boston on Aug. 21 at a meeting of the American Chemical Society. Bacterial growth on contact lenses can limit wearing time and cause infection, which in severe cases leads to blindness.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.