Add to favorite
Subscribe to our Newsletters Subscribe to our Newsletters Get Daily Updates RSS

Laser Microsurgery for Treating Eye Tumors Developed
July 14, 2010 17:35

Cooperation of Russian physicists and ophthalmologists resulted in a technology of femtosecond laser microsurgery of subsurface eye tumors, for instance, tumors of sclera – eye protein coat.

Frankly speaking, some methods for removing subsurface or, in medical terms, epibulbar tumors already exist – radiosurgery, for instance. However, this treatment often results in recurrent tumors or metastases. Another risk factor is professional qualification of a surgeon. In order to eliminate these health hazards, Russian physicists and ophthalmologists developed a noninvasive surgery technique, using femtosecond laser radiation.

Similar technique – “FemtoLASIK” – is successfully used in microsurgery for treating myopia (shortsightedness) and hyperopia (farsightedness). When short-pulse laser radiation is focused under the surface of a transparent material, a tiny bubble is formed in a focal point. Thus, when laser “makes” several bubbles, a tissues flap forms over the baubles and can be removed, if necessary. In this case, patients shouldn’t worry about human errors, and, moreover, laser cut is much cleaner than scalpel’s. Laser provides ideal fitting of tissues, thus making recovery fast and full.



As for sclera, femtosecond laser surgery nullifies formation of metastases, both local and remote, and eliminated the necessity of additional tissue cut for smoothing of contacting surfaces. Well, “FemtoLASIK” works great in transparent eye cornea, but is useless for sclera, which is opaque, due to light scattering. Working with sclera needs several aspects to be kept in mind: sclera’s optical opacity, its nonlinear nature, and eye’s spherical shape.

Scientists considered all of mentioned aspects and offered a solution. Researchers found a safe reagent for sclera clarification – glucose water solution; in order to cope with nonlinearity, femtosecond laser radiation was made 1000 times less powerful; and flat cuts were used to eliminate tissue curves. The technology was first tested on glass, then – on organic glass (Plexiglas), and after that scientists started testing their development on sample eyes. Tests showed that new development works right (tiny bubbles do form under tissue surface), and now it is waiting for clinical trials to begin.

However, before clinical trials can start, scientists need to build a tool for this technology, because powerful femtosecond laser devices, which are used in laboratories, cannot be used for treating a patient – they cannot provide necessary pulse frequency and are one thousand times more powerful than the technique needs. Authors of the technology believe that existing tools for femtosecond eye microsurgery can be modified in order to work with eye sclera. Scientists say that they negotiated with a famous Russian laser-producing company in order to perform necessary modifications in existing tools.

Russian scientists are currently preparing materials for publication in an electronic periodical “Health Care Research Updates”, edited by Nova Science Publishers, United States.

Sources: Institute of Physics

Kizilova Anna

Tags: Russian Scientists Russian medicine    

Next Previous

You might also find interesting:

Diamonds Dismissed Nobel-Prize Winning Graphene Enters Welcome, Time Travelers! Right Cerebral Hemisphere Catches Meaning and Left One Chooses Words Mathematical System for Neural Network Diagnosing of Infarcts Invented in Perm Sunscreen Made of Silicon Nanoparticles

Comment on our site

RSS   twitter      submit

Fairs in Moscow  Tomsk  sport  Exhibitions in Moscow  Russian Cinema  TV Channels  Mercedes-Benz Fashion Week Russia  Film award  FIFA World Cup   Unis Fair  Sexual Revolution  gaming in Russia  Chelsea FC  Film Distribution  Moscow  Graphic Art  Russian car producers  Russian technologies  Eurovision  cruise  Black Sea  St. Petersburg  Russian scientists  Russian business  Alexander Pushkin  Maria Sharapova  Portugal  ArtPlay Design Center  Russian Rock Music  Baikonur cosmodrome  St. Petersburg Parks   Karelia   Park Live  Yandex  Tatarstan  Russian economy  Russian Museums   Entertainment Center   Lyudmila Lyadova  Russian roads  Russian tourism  Konstantin Korovin  Rodion Shchedrin  Samara Region  Russian science  sanctions  Raiffeisenbank  Ivanovo  physics  Violeta Ruiz 

Travel Blogs
Top Traveling Sites