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Non-invasive vision correction with low energy laser pointer

American researchers have developed a new technology that can correct eyesight by adjusting the corneal shape with a low-energy laser pointer, without damaging cells and tissues, with fewer side effects and a wide range of applications.

Columbia University recently issued a press release saying that the new technology works well in preliminary trials and is expected to be used to treat myopia, hyperopia, astigmatism, etc.

A common procedure for correcting vision today is to use a laser to burn the cornea and change the refractive power of the cornea by "grinding." The surgery may have sequelae due to trauma, and there are many restrictions on the applicable population.

The new study is the first non-invasive correction of corneal diopter with a laser, using a laser-induced photochemical reaction. The laser energy used is low, and does not produce a cauterizing effect, but can cause a series of reactions inside the cornea, which promotes cross-linking between collagen fibers, changes the mechanical properties of the corresponding parts, and then affects the overall structure of the cornea.

Related papers were published in the new issue of the British journal Nature Photonics. Researchers plan to conduct clinical trials during the year and optimize algorithms to accurately predict the extent of corneal deformation caused by the laser pointer for personalized treatment.

With the increasingly fierce market competition, laser TV manufacturers are constantly upgrading their product performance. From brightness to color performance, these "hard indicators" of laser TV are constantly improving. But some pain points in the product are hard to understand if you don't use it yourself. The next few questions to ask, have you encountered during daily viewing?

The automatic screen function is equipped with an infrared detection device on the laser TV main unit. Once a lens close to the laser TV is sensed, the light source will be automatically extinguished, so that the laser pointer glare can be prevented from entering the eye.

This feature is very useful for users who have children at home. Because the child who just learned to walk because of curiosity will put his eyes on the light source of the laser pointer TV, to know that the brightness of the light source is very high at such a close distance, and the child's eye structure is still developing, direct sunlight It is likely to stab the eyes and even leave sequelae.

Nowadays, there are many types of laser TV interfaces, and HDMI, USB and VGA interfaces have become standard equipment. But this problem has arisen. Since laser TVs are ultra-short-focus products, the back of the fuselage is very close to the wall, so it is often not seen when connecting other devices.

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