Surgery with laser focus needs no cut

BEIJING - Researchers from China and Canada have developed a new highly targeted laser device to close blood vessels within human tissue.

Reporting in the US journal Science Advances, they wrote the device has the potential to diagnose diseases such as skin cancer and do precise surgery without cutting the skin.

Using an ultrafast infrared laser beam, it allows imaging of living tissue up to 400 microns for skin tissue and 1 millimeter for brain tissue, according to the researchers from the University of British Columbia in Canada and China's Fujian Normal University.