Featured Research

from universities, journals, and other organizations

University Of Michigan Laser Performs High-Precision Corneal Surgery Not Possible With Current Technology

Date:
July 15, 1997
Source:
University Of Michigan
Summary:
University of Michigan researchers have developed and demonstrated a new, high-precision laser for eye surgery which can be used to perform surgical procedures within the transparent cornea of the eye---something not possible with current laser technology.

University of Michigan July 9, 1997

Contact: Sally Pobojewski Phone: (313) 647-1844 E-mail: pobo@umich.edu

University of Michigan laser performs high-precision corneal surgery not possible with current technology.

EDITORS: Black-and-white slide of the scanning electron microscope image shown on this release is available at http://www.umich.edu/~newsinfo/Photos/eyeball.gif

ANN ARBOR---University of Michigan researchers have developed and demonstrated a new, high-precision laser for eye surgery which can be used to perform surgical procedures within the transparent cornea of the eye---something not possible with current laser technology.

The U-M laser uses powerful light pulses lasting just a few hundred femtoseconds or quadrillionths of a second. According to Ron M. Kurtz, assistant professor of ophthalmology in the U-M Medical School, these ultrashort pulses require less energy to cut tissue and do not create large "shock waves" that can damage surrounding structures.

Kurtz is currently testing the laser for use in corneal refractive surgery for vision correction and in corneal transplantation. Future research will test the laser's effectiveness in the treatment of glaucoma and cataracts.

The new laser system was developed by a team of scientists from the U-M College of Engineering's Center for Ultrafast Optical Science and the U-M Medical School's W.K. Kellogg Eye Center.

Tibor Juhasz, an associate research scientist with joint appointments in the College of Engineering and the Medical School, presented the results of recent experiments with the U-M laser at the Advanced Opthalmic Laser Surgery Conference held June 25-28 in Interlaken, Switzerland. These studies compared the precision cuts made in human cadaver corneas with the U-M laser with cuts made by laser and mechanical surgical devices currently used by opthalmic surgeons.

"Cuts made by the U-M's femtosecond laser had extremely high surface quality with accuracy better than 10 microns," Juhasz said. "These results were markedly better than similar cuts made with mechanical devices, which are associated with significant risks and complications. Other lasers were unable to perform the procedure."

"Although the new laser will not be available for general patient use for at least three to four years, it could represent a major advance in the surgical treatment of several eye diseases and conditions by avoiding the risks and complications associated with less precise mechanical and laser techniques," Kurtz said.

An analysis of the optimal laser parameters for corneal surgery based on work by Kurtz and several U-M colleagues is being published in an upcoming issue of the Journal of Refractive Surgery. Animal tests are currently under way with plans for human testing in the near future.

A prototype of the new surgical laser system was designed and built by Juhasz and his colleagues in the Femtosecond Medical Research Laboratory at the U-M College of Engineering's Center for Ultrafast Optical Science (CUOS). Since it was established in 1990 with $14.3 million in funding from the National Science Foundation and the state of Michigan, CUOS scientists have developed ultrashort-pulsed laser technology for many applications in high-speed communications, manufacturing and biological imaging. CUOS lasers are based on a technique called chirped pulse amplification---developed by Gerard A. Mourou, U-M professor of electrical engineering and computer science and director of the research center.

The U-M has applied for several patents related to ultrafast lasers and is currently assisting in the establishment of a new company to commercialize the technology. A corporate partner will provide the delivery system technology and additional intellectual property for the new company, called InterLase, which will be established in Ann Arbor this summer.

Research leading to the development of the new laser was funded by the National Science Foundation, the U-M Office of the Vice President for Research, the U-M College of Engineering, the W.K. Kellogg Eye Center, the Research to Prevent Blindness Foundation and the Midwest Eye Bank and Transplantation Centers. # # # # #


Story Source:

The above story is based on materials provided by University Of Michigan. Note: Materials may be edited for content and length.


Cite This Page:

University Of Michigan. "University Of Michigan Laser Performs High-Precision Corneal Surgery Not Possible With Current Technology." ScienceDaily. ScienceDaily, 15 July 1997. <www.sciencedaily.com/releases/1997/07/970715053931.htm>.
University Of Michigan. (1997, July 15). University Of Michigan Laser Performs High-Precision Corneal Surgery Not Possible With Current Technology. ScienceDaily. Retrieved August 1, 2014 from www.sciencedaily.com/releases/1997/07/970715053931.htm
University Of Michigan. "University Of Michigan Laser Performs High-Precision Corneal Surgery Not Possible With Current Technology." ScienceDaily. www.sciencedaily.com/releases/1997/07/970715053931.htm (accessed August 1, 2014).

Share This




More Health & Medicine News

Friday, August 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Vaccine Might Be Coming, But Where's It Been?

Ebola Vaccine Might Be Coming, But Where's It Been?

Newsy (Aug. 1, 2014) Health officials are working to fast-track a vaccine — the West-African Ebola outbreak has killed more than 700. But why didn't we already have one? Video provided by Newsy
Powered by NewsLook.com
Study Links Certain Birth Control Pills To Breast Cancer

Study Links Certain Birth Control Pills To Breast Cancer

Newsy (Aug. 1, 2014) Previous studies have made the link between birth control and breast cancer, but the latest makes the link to high-estrogen oral contraceptives. Video provided by Newsy
Powered by NewsLook.com
House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Uganda on Alert for Ebola but No Confirmed Cases

Uganda on Alert for Ebola but No Confirmed Cases

AFP (July 31, 2014) Uganda's health minister said on Thursday that there are no confirmed cases of Ebola in the country, but that it remained on alert for cases of the deadly virus. Uganda has suffered Ebola outbreaks in the past, most recently in 2012. Duration: 00:59 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins