New glasses

Created new multi-purpose glasses - absolutely any vision correction.
The need for bifocal lenses in the near future may disappear and are replaced by a new generation coming glasses. Already established glasses lens through which the objects are clearly visible to any person suffering from any degree of nearsightedness or farsightedness.

Over the years, there are different processes and lenses in the eyes often lose the ability to change shape, and it is necessary to properly configure the focus on close objects. This disease is called presbyopia, or otherwise it is called presbyopia, and this situation should seek a way out, so people started working on the development of optics. Consider this situation - the person to the disease suffered from myopia, while the use of points, he will quickly be able to focus on close or distant subjects a bit. For people aged and created bifocals. The lenses of these glasses are from two lenses, which are located one on top, and the second at the bottom. Upper order to be able to focus on distant objects, and the lower order to focus on nearby objects, but there are different situations where close objects must not be regarded at the bottom and just above, or distant objects at the bottom and it needs to be raised or lowered head, which creates a big problem.

Israeli scholar from Bar-Ilan University, Zeev Zalevsky invented a technique that allows you to create a lens focuses light and well at a distance of 33 centimeters to a distance horizon. For such purposes on a normal lens creates a lattice of 25 circular structures, each has a size of two millimeters, and is 2 concentrated ring, but the exact size of the ring will be different for a particular lens, and it depends on the shape and size, but on average a few hundred microns in width and a micrometer in depth, telling Zalewski.

The rings serve as a displacement phase oscillations of light waves that pass through the lens and simultaneously cause sicken and amplifying the interference. When using a computer model Zalewski created another model that generates reinforcing channel interference, which is perpendicular to the lens of any of the 25 structures. As a result of these transformations, the light is focused axial channel, not the focal point. If the retina is in the area of the channel, then the object can always be seen in focus. In the sequel to confirm their achievements Zalewski, attached to the camera lens of your phone, and also experienced his invention at the twelve volunteers. Shortly based company Xceed Imaging, which perfected the technology. In any new invention has its pluses and minuses, it is also a plus that the person sees well, and the disadvantage is that the adventures of the world through the lens loses contrast. In turn, Spanish scientist Pablo Art from the University of Murcia said that at too high a decrease in contrast, the brain will be difficult to process information coming from the eye, but Zalewski says that those people who wear glasses are not noticed a significant change in contrast as eyes well adapted to the light of low intensity light, and it happens a few seconds. But the brain needs to get used not only to change the contrast, but also by unanimous decision, because the lenses do not move the changing angle of view and, therefore, concentrated between the image circle will be defocused. At the time of movement of the eyeball from one structure to another carved holes appear and the brain fills them and creates the effect of continuity - said Zalewski.