Use laser beam to cure eye diseases

A one-millionth second pulse laser (femtosecond laser) can cure poor vision and identify melanoma. In addition, it is a good tool for healing when lasers can drill a nanoscale hole into cell membranes and put genes into cells.

About 64% of Germans cannot see without glasses or contact lenses. One of two adults with short-sighted or near-sightedness can be treated with laser surgery, so femtosecond lasers are increasingly widely used. This type of beam can focus through the tissue directly into the area to be treated, reducing time and speeding up the healing process.

However, it still has a disadvantage, when the excess radiation radiates in the eye directly into the retina, which can cause visual impairment. Mr. Karsten Konig and colleagues at Fraunhofer IBMT Institute of Biomedical Engineering (Germany) are studying to eliminate these side effects.

Mr. Konig explained, the team is trying to cleverly remove tissue components and correctly use low-pulse special energies of several nanoseconds. This can be created by a powerful femtosecond laser with high pulses, which can focus beams with high precision using optical lenses manufactured by Zeiss.

The laser has entered the use of nanolaser beam therapy, a new industry related to diagnosis and treatment from individual cells. Depending on the intensity of the laser and optical glass used, the system can be a femtoscope microscope for the ability to look at living tissue cells with precision thousands of times higher than electron microscopes.

The team of research scientists has successfully demonstrated the world's smallest knife cut into living tissue with a width of only 70 nanometers. This opens up the possibility of new gene transfer by laser when a foreign genetic material attaches to a living cell by pulsed laser without destroying the cell.

According to the German magazine