Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Correcting presbyopia with the laser

06.02.2019

Presbyopia and astigmatism are widespread. To prevent the glasses from becoming unavoidable, the Laser Zentrum Hannover e.V. (LZH) has developed a virtual eye model together with two project partners. With this, an eye surgery can be simulated. During the so-called fs-lentotomy, the lens of the eye is made more flexible again by generating microsections with a femtosecond laser. In fs-keratotomy, the astigmatism of the cornea is compensated by targeted cuts.

For the RayFEye project, the scientists of the LZH have developed both a mechanics and an optics model.


In order to better predict eye surgeries in the future, scientists at the LZH have developed both a mechanics as well as an optics model of the eye.

Photo: LZH

The mechanical model was used on test eyes (a by-product of the animal) to examine how laser incisions in the lens and the cornea influence their refraction behavior.

Based on these data, the researchers then developed a biomechanical model that can also be analyzed for optical imaging performance.

The model is supposed to predict the optimal placement and the expected vision of the patient before surgery.

The long-term goal is to develop gentle surgical methods and to replace clinical studies through virtual studies.

About RayFEye

In addition to the LZH, the Optimo Medical AG (formerly Integrated Scientific Services AG), which is developing the OptimEyesTM software, and the ROWIAK GmbH, the manufacturer of the laser system, are involved in the project.

The joint project "Ray tracing in ophthalmic finite element models for predicting visual acuity enhancement" (RayFEye) was funded within the framework of the Eurostars program by the Federal Ministry of Education and Research (BMBF) and by the Swiss State Secretariat for Education, Research and Innovation (SERI) under the grant number 01QE1545B.

Wissenschaftliche Ansprechpartner:

Laser Zentrum Hannover e.V.
Dipl.-Biol. Lena Bennefeld
Communication Department
Hollerithallee 8
D-30419 Hannover
Germany
Tel.: +49 511 2788-238
Fax: +49 511 2788-100
E-Mail: presse@lzh.de
Internet: www.lzh.de

Lena Bennefeld | Laser Zentrum Hannover e.V.

Further reports about: LZH Laser Laser Zentrum Hannover laser system lens

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New studies increase confidence in NASA's measure of Earth's temperature

A new assessment of NASA's record of global temperatures revealed that the agency's estimate of Earth's long-term temperature rise in recent decades is accurate to within less than a tenth of a degree Fahrenheit, providing confidence that past and future research is correctly capturing rising surface temperatures.

The most complete assessment ever of statistical uncertainty within the GISS Surface Temperature Analysis (GISTEMP) data product shows that the annual values...

Im Focus: The geometry of an electron determined for the first time

Physicists at the University of Basel are able to show for the first time how a single electron looks in an artificial atom. A newly developed method enables them to show the probability of an electron being present in a space. This allows improved control of electron spins, which could serve as the smallest information unit in a future quantum computer. The experiments were published in Physical Review Letters and the related theory in Physical Review B.

The spin of an electron is a promising candidate for use as the smallest information unit (qubit) of a quantum computer. Controlling and switching this spin or...

Im Focus: Self-repairing batteries

UTokyo engineers develop a way to create high-capacity long-life batteries

Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...

Im Focus: Quantum Cloud Computing with Self-Check

With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.

Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...

Im Focus: Accelerating quantum technologies with materials processing at the atomic scale

'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.

However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

SEMANTiCS 2019 brings together industry leaders and data scientists in Karlsruhe

29.04.2019 | Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

 
Latest News

On Mars, sands shift to a different drum

24.05.2019 | Physics and Astronomy

Piedmont Atlanta first in Georgia to offer new minimally invasive treatment for emphysema

24.05.2019 | Medical Engineering

Chemical juggling with three particles

24.05.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>