Russian scientists have developed a new laser which can correct eyesight without cutting the surface of the eye. Laser surgery to restore eyesight has been performed for nearly two decades, and every year the procedure becomes safer and easier. Currently, it can be done using two lasers, one opening the eye's surface and the other working with the cornea itself. But soon even this futuristic technology may seem ancient as true technology of the 21st Century steps in.

“Our laser is able to penetrate the eye's cornea without damaging its surface. As a result we can make the needed changes inside the eyeball without having to open it first,” shares Konstantin Lapshin, senior researcher at Physics Instrumentation Centre. The femtosecond laser generates impulses of light less than one billionth of a second long. Such beams can cut or evaporate matter when several lasers are aimed at one spot.

Read more: Laser Eye Correction Without Cornea Loss

A company called Spectranetics is revolutionising the way arteries are unblocked by allowing doctors to clear them with a high powered laser rather than using traditional stents or by-pass surgeries. While the procedure is not new, doctors around the world are now starting to perform it as they aquire the equipment. The technique is saving lives as well as limbs. Spectranetics offers the only Excimer Laser System approved by the Food and Drug Administration (FDA) for treatment of multiple cardiovascular diseases.

Engineer’s at Spectranetics discovered using concentrated ultraviolet light delivered from the Laser, in short, controlled, energy pulses by our own fiber-optic delivery devices could be a valuable medical device in removing build-up of arterial disease within the body.

Read more: Unblocking Arteries with the Excimer Laser System

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Doctors will one day inject microbots into your blood to fight disease.

Australian scientests have produced electric motors tiny enough to power microbots through blood vessels in the body and the brain. The microbots would be guided by remote control where current medical catheters cannot reach, into small blood vessels to unblock clogged arteries.

Their tiny motor is less than the width of three human hairs. It will soon power medical nanorobots that can swim through tiny blood vessels into the brain. Such devices could enter previously unreachable brain areas, unblocking blood clots, cleaning vessels or sending back images to surgeons.

Read more: Unblocking Arteries with Nanobots

Cryogenic suspension is about the idea of freezing a person at the time of death to preserve (as well as possible) the physical body and mainly the brain. The hope is that future technology will enable the patient to be revived and their cause of death treated.

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Within a decade dentists will be able to help decaying teeth repair themselves rather than patching them with gold or ceramic fillings. Researchers say they have developed a way of regrowing dentine, the yellow mineral substance in the middle of teeth that is most affected by decay. They hope that dentists will be able to use the technique and eliminate the need for fillings and transforming the dental industry all together.

Prof Sally Marshall, of the University of California, said the technique involves painting a calcium solution onto the damaged dentine. This kick-starts the natural ability of the dentine to regrow, she explained in the Journal of Structural Biology. However, although initial trials have been successful, further work is needed before all the dentine in a tooth can be made to regrow.

Read more: Regrowing Teeth to Repair Decay