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 First COVID-19 Patient in Germany successfully treated with novel Diaphragm Therapy
10.07.2020 | Universität Greifswald

nachricht Restoring Vision Through Electrical Stimulation
09.07.2020 | Universität Zürich

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: The spin state story: Observation of the quantum spin liquid state in novel material

New insight into the spin behavior in an exotic state of matter puts us closer to next-generation spintronic devices

Aside from the deep understanding of the natural world that quantum physics theory offers, scientists worldwide are working tirelessly to bring forth a...

Im Focus: Excitation of robust materials

Kiel physics team observed extremely fast electronic changes in real time in a special material class

In physics, they are currently the subject of intensive research; in electronics, they could enable completely new functions. So-called topological materials...

Im Focus: Electrons in the fast lane

Solar cells based on perovskite compounds could soon make electricity generation from sunlight even more efficient and cheaper. The laboratory efficiency of these perovskite solar cells already exceeds that of the well-known silicon solar cells. An international team led by Stefan Weber from the Max Planck Institute for Polymer Research (MPI-P) in Mainz has found microscopic structures in perovskite crystals that can guide the charge transport in the solar cell. Clever alignment of these "electron highways" could make perovskite solar cells even more powerful.

Solar cells convert sunlight into electricity. During this process, the electrons of the material inside the cell absorb the energy of the light....

Im Focus: The lightest electromagnetic shielding material in the world

Empa researchers have succeeded in applying aerogels to microelectronics: Aerogels based on cellulose nanofibers can effectively shield electromagnetic radiation over a wide frequency range – and they are unrivalled in terms of weight.

Electric motors and electronic devices generate electromagnetic fields that sometimes have to be shielded in order not to affect neighboring electronic...

Im Focus: Gentle wall contact – the right scenario for a fusion power plant

Quasi-continuous power exhaust developed as a wall-friendly method on ASDEX Upgrade

A promising operating mode for the plasma of a future power plant has been developed at the ASDEX Upgrade fusion device at Max Planck Institute for Plasma...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Contact Tracing Apps against COVID-19: German National Academy Leopoldina hosts international virtual panel discussion

07.07.2020 | Event News

International conference QuApps shows status quo of quantum technology

02.07.2020 | Event News

Dresden Nexus Conference 2020: Same Time, Virtual Format, Registration Opened

19.05.2020 | Event News

 
Latest News

X-ray scattering shines light on protein folding

10.07.2020 | Life Sciences

Looking at linkers helps to join the dots

10.07.2020 | Materials Sciences

Surprisingly many peculiar long introns found in brain genes

10.07.2020 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>