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P RE S S RE LE AS E
Laser instead of Reading Glasses?
 Press release
Hannover, February 08th, 2016
Up to now, presbyopia is usually treated by wearing reading
glasses. Different methods have also been tested to correct
this form of defective vision with the laser. Now, the Laser
Zentrum Hannover e.V. (LZH) is developing a virtual model
together with two project partners, in which an especially
gentle, laser-based surgical method can be simulated. In the
so called fs-lentotomy method, the crystalline lens is made
flexible again by performing micro-cuts with a femtosecond
laser. The aim of the RayFEye project is to make the results
of the eye surgery predictable.
 Contact
Dr. Nadine Tinne
Marketing & Communications
+49 511 2788-238
[email protected]
The Image-Guided Laser Surgery Group of the Biomedical Optics Department is now developing an experimental setup in
which the influence of the micro-cuts on the crystalline lens can
be measured. The special feature of this complex setup is that it
can stretch and unstretch a sample crystalline lens, an animal
byproduct. Thus, different focus distances of the eye can be simulated. The scientists can measure the changes in the beam path
(ray tracing) through the lens both before and after the micro-cuts
in the eye have been made.
Prior simulation of the surgery
With the results of these experiments, cutting patterns for the
surgical correction of presbyopia can be determined and optimized. The cutting patterns and the measurement results of the
experiments will then be entered into a software. This software
creates a virtual lens model on which the surgical correction can
be simulated prior to the surgery.
The goal of the project is to develop a surgical method in which
presbyopia can be corrected in a gentle manner. Additionally, the
software should be further developed to customize it for clinical
use. It should be able to simulate surgeries a priori in order to
improve the results of eye corrections.
Editing:
Dr. Nadine Tinne | Marketing & Communications | +49 511 2788-238 | [email protected]
Laser Zentrum Hannover e.V. | Hollerithallee 8 | 30419 Hannover | +49 511 2788-0 | www.lzh.de
Apart from the LZH, the Optimo Medical AG (formerly Integrated
Scientific Services AG), which develops the OptimEyesTM software, and the ROWIAK GmbH as manufacturer of the complete
laser system are involved in the project. The project „Ray tracing
in ophthalmic finite element models for predicting of visual acuity
enhancement“ (RayFEye) is supported by the German Federal
Ministry of Education and Research (BMBF) and the Swiss State
Secretariat for Education, Research and Innovation (SBFI) within
the framework of the Eurostars program.
There is a photo accompanying this press release.
Figure caption 1: Applying micro-cuts in the lens in a stretcher. (Photo: LZH)
Laser Zentrum Hannover e.V. (LZH)
As an independent, non-profit research institute, the Laser Zentrum Hannover e.V. (LZH) stands for innovative
research, development and consulting. The LZH is supported by the Lower Saxony Ministry for Economics, Labour and Transport and is dedicated to the selfless promotion of applied research in the field of photonics and
laser technology. Founded in 1986, over 170 employees are now working for the LZH.
The focus of the LZH lies on the fields of optical components and systems, optical production technologies, and
biomedical photonics. Interdisciplinary cooperation between natural scientists and mechanical engineers makes
innovative approaches to challenges from the most different areas possible: from the development of components
for specific laser systems to process developments for the most diverse laser applications, for example for mediEditing:
Dr. Nadine Tinne | Marketing & Communications | +49 511 2788-238 | [email protected]
Laser Zentrum Hannover e.V. | Hollerithallee 8 | 30419 Hannover | +49 511 2788-0 | www.lzh.de
cal technology or lightweight construction in the automotive sector. Seventeen spin off companies have emerged
from the LZH up to now. Thus, the LZH has created a strong transfer between fundamental science, application
oriented research, and industry.
Editing:
Dr. Nadine Tinne | Marketing & Communications | +49 511 2788-238 | [email protected]
Laser Zentrum Hannover e.V. | Hollerithallee 8 | 30419 Hannover | +49 511 2788-0 | www.lzh.de