Featured Research

from universities, journals, and other organizations

Laser "Scalpel" Improves Popular Eye Surgery; Ultrafast Pulse Offers High Precision For Cutting Corneal Flap

Date:
July 3, 2001
Source:
National Science Foundation
Summary:
Researchers have developed a procedure for using an ultrafast laser to make clean, high-precision surgical cuts in the human cornea. The procedure is expected to advance the popular LASIK eye surgery by reducing complications due to traditional manual cutting techniques.

Researchers have developed a procedure for using an ultrafast laser to make clean, high-precision surgical cuts in the human cornea. The procedure is expected to advance the popular LASIK eye surgery by reducing complications due to traditional manual cutting techniques.

The laser technology and surgical procedures were developed at the University of Michigan by a joint team of physicists and ophthalmologists from the National Science Foundation (NSF) Center for Ultrafast Optical Science (CUOS) and the university's Kellogg Eye Center. The team reports on the procedure in the June 2001 issue of Ophthalmology Clinics of North America.

"The collaborations were very important in this project, which allowed us to apply the precision of physics and materials science to a medical application that benefits a large number of people," said CUOS Director Gιrard Mourou.

LASIK surgery, or laser in situ keratomileusis, has revolutionized vision correction surgery. In traditional LASIK surgery, a mechanical blade called a microkeratome is used to cut a flap of cornea, an excimer laser is used to reshape or remove a portion of the cornea, then the flap is repositioned. Now, surgeons can use the very precise femtosecond laser to create the initial flap. The laser emits light in extremely fast pulses, each pulse roughly a billion times faster than an electronic camera flash.

Use of the femtosecond laser to cut corneal flaps is more precise than previous methods, reduces the chance of uneven cuts or collateral tissue damage, and improves clinical safety.

"The path from an NSF Science and Technology Center to the marketplace is an excellent example of how federal funding of basic research can lead to new technologies with broad social benefit," said Robert Eisenstein, NSF's assistant director for mathematical and physical sciences. "The cross-disciplinary effort of the team was an important factor in this research."

Lasers with ultrashort pulse durations--a femtosecond is one millionth of a billionth of a second--have been researched extensively for the machining of materials on the micrometer-scale, but they are new to medicine. In attempting to harness their tremendous intensity, the scientific team discovered they were able to cut tissue with unsurpassed precision. The laser's intensity is thousands of times greater than are those of conventional lasers used in medicine.

Two members of the Michigan team, Tibor Juhasz and Ron Kurtz, founded the IntraLaseTM Corporation to commercialize the new laser, with support from NSF, the National Eye Institute of the National Institutes of Health, and the Department of Defense in the form of Small Business Innovative Research (SBIR) grants. The IntraLaseTM product, the Pulsion FSTM laser, was introduced at the American Society of Cataract and Refractive Surgery meeting in San Diego, Calif., in April 2001. It is expected to be widely available in the United States within a year.

Researchers are now exploring the possibility of extending this technique to other eye procedures, such as cornea transplants or glaucoma treatment. One potential application is creating new drainage systems in the eye when those systems are not functioning adequately.

"We have barely begun to explore the myriad of uses that the femtosecond laser offers in the clinical management of glaucoma," said Paul Lichter, director of the Kellogg Eye Center.


Story Source:

The above story is based on materials provided by National Science Foundation. Note: Materials may be edited for content and length.


Cite This Page:

National Science Foundation. "Laser "Scalpel" Improves Popular Eye Surgery; Ultrafast Pulse Offers High Precision For Cutting Corneal Flap." ScienceDaily. ScienceDaily, 3 July 2001. <www.sciencedaily.com/releases/2001/06/010629063835.htm>.
National Science Foundation. (2001, July 3). Laser "Scalpel" Improves Popular Eye Surgery; Ultrafast Pulse Offers High Precision For Cutting Corneal Flap. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2001/06/010629063835.htm
National Science Foundation. "Laser "Scalpel" Improves Popular Eye Surgery; Ultrafast Pulse Offers High Precision For Cutting Corneal Flap." ScienceDaily. www.sciencedaily.com/releases/2001/06/010629063835.htm (accessed July 30, 2014).

Share This




More Health & Medicine News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Generics Eat Into Pfizer's Sales

Generics Eat Into Pfizer's Sales

Reuters - Business Video Online (July 29, 2014) — Pfizer, the world's largest drug maker, cut full-year revenue forecasts because generics could cut into sales of its anti-arthritis drug, Celebrex. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Nigeria Ups Ebola Stakes on 1st Death

Nigeria Ups Ebola Stakes on 1st Death

Reuters - Business Video Online (July 29, 2014) — Nigerian authorities have shut and quarantined a Lagos hospital where a Liberian man died of the Ebola virus, the first recorded case of the highly-infectious disease in Africa's most populous economy. David Pollard reports Video provided by Reuters
Powered by NewsLook.com
Running 5 Minutes A Day Might Add Years To Your Life

Running 5 Minutes A Day Might Add Years To Your Life

Newsy (July 29, 2014) — According to a new study, just five minutes of running or jogging a day could add years to your life. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Poses Little Threat To U.S.: CDC

Ebola Outbreak Poses Little Threat To U.S.: CDC

Newsy (July 29, 2014) — The Ebola outbreak in West Africa poses little threat to Americans, according to officials with the Centers for Disease Control and Prevention. Video provided by Newsy
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