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

More articles from Medical Engineering:

nachricht Powering a pacemaker with a patient's heartbeat
20.02.2019 | American Chemical Society

nachricht Novel coating enables hip implants to grow in better and prevents aseptic inflammation
20.02.2019 | Fraunhofer-Institut für Produktionstechnologie IPT

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Light from a roll – hybrid OLED creates innovative and functional luminous surfaces

Up to now, OLEDs have been used exclusively as a novel lighting technology for use in luminaires and lamps. However, flexible organic technology can offer much more: as an active lighting surface, it can be combined with a wide variety of materials, not just to modify but to revolutionize the functionality and design of countless existing products. To exemplify this, the Fraunhofer FEP together with the company EMDE development of light GmbH will be presenting hybrid flexible OLEDs integrated into textile designs within the EU-funded project PI-SCALE for the first time at LOPEC (March 19-21, 2019 in Munich, Germany) as examples of some of the many possible applications.

The Fraunhofer FEP, a provider of research and development services in the field of organic electronics, has long been involved in the development of...

Im Focus: Regensburg physicists watch electron transfer in a single molecule

For the first time, an international team of scientists based in Regensburg, Germany, has recorded the orbitals of single molecules in different charge states in a novel type of microscopy. The research findings are published under the title “Mapping orbital changes upon electron transfer with tunneling microscopy on insulators” in the prestigious journal “Nature”.

The building blocks of matter surrounding us are atoms and molecules. The properties of that matter, however, are often not set by these building blocks...

Im Focus: University of Konstanz gains new insights into the recent development of the human immune system

Scientists at the University of Konstanz identify fierce competition between the human immune system and bacterial pathogens

Cell biologists from the University of Konstanz shed light on a recent evolutionary process in the human immune system and publish their findings in the...

Im Focus: Transformation through Light

Laser physicists have taken snapshots of carbon molecules C₆₀ showing how they transform in intense infrared light

When carbon molecules C₆₀ are exposed to an intense infrared light, they change their ball-like structure to a more elongated version. This has now been...

Im Focus: Famous “sandpile model” shown to move like a traveling sand dune

Researchers at IST Austria find new property of important physical model. Results published in PNAS

The so-called Abelian sandpile model has been studied by scientists for more than 30 years to better understand a physical phenomenon called self-organized...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Global Legal Hackathon at HAW Hamburg

11.02.2019 | Event News

The world of quantum chemistry meets in Heidelberg

30.01.2019 | Event News

Our digital society in 2040

16.01.2019 | Event News

 
Latest News

New therapeutic approach to combat African sleeping sickness

20.02.2019 | Life Sciences

Powering a pacemaker with a patient's heartbeat

20.02.2019 | Medical Engineering

The holy grail of nanowire production

20.02.2019 | Power and Electrical Engineering

VideoLinks
Science & Research
Overview of more VideoLinks >>>