科学家发明眼球创可贴 能愈合眼部伤口的隐形眼镜
Treating wounds on a part of the body as delicate as the eyeball isn't easy, but scientists have developed an innovative new approach: a therapeutic contact lens that can act as a bandage for damaged eyes. This is no ordinary contact lens, because it's made up of donor cells left over from regular corneal transplants. These special limbal mesenchymal stromal cells help to encourage the injured eye to repair its wounds itself. According to the researchers, a contact lens bandage could be in place within hours of a patient arriving at hospital with eye damage. It's likely to be cheaper and easier to apply than current treatments too. "Based upon preliminary data we believe that the donor cells release a range of wound-healing factors that encourage repair of the eye's surface," says one of the researchers, Damien Harkin from the Queensland University of Technology (QUT) in Australia. "Our therapy could provide welcome relief for patients suffering from chronic conditions such as corneal ulcers and persistent surface defects that haven't responded to conventional therapies." These bandage contact lenses will need to go through an extensive set of clinical trials before they get approved, and the researchers say it could take several years for them to become available to general public. |