Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


New technology offers quicker recovery, better results after vision-saving glaucoma surgery


When conventional therapies for glaucoma have been exhausted, ophthalmologists at UT Southwestern Medical Center at Dallas have a new surgical technique in their arsenal to arrest this blinding disease caused when there is too much pressure on the inside of the eye.

Dr. Karanjit Kooner

UT Southwestern ophthalmologists are among a few in the Dallas area to use the recently approved Ex-PRESS Mini Glaucoma Shunt, a metal cylinder smaller than a grain of rice. It is surgically implanted in the eye and offers an escape route for the pressure-causing fluid.

"There are several advantages associated with this shunt," said Dr. Karanjit Kooner, associate professor of ophthalmology. "The small size requires minimal manipulation of tissues; the procedure is rapid and reversible; and postoperative inflammation is minimal. I have had great success with this procedure. The average reduction of intraocular pressure was about 40 percent, and many patients were able to stop using their glaucoma medications."

Dr. Kooner reported on the technique he uses to implant the shunt at the annual American Ocular Surgery Symposium in New York in mid-September.

The shunt received Food and Drug Administration approval in March 2002. So far about 700 ophthalmologists nationwide have trained to do the procedure, including about 50 in Texas.

Conventional shunts used to treat glaucoma are larger, forcing ophthalmologists to make bigger cuts on the eye. Now, the incision is between 2 millimeters and 4 mm long – about half the size necessary to accommodate other shunts.

As a result, the surgery is less invasive and causes less scar tissue, making the procedure more likely to succeed. Previously, large amounts of scar tissue sometimes formed, blocking the relief channel.

Patients also experience shorter healing times with the new shunt. The surgery doesn’t require a hospital stay and takes less than an hour. A patch is worn over the eye for about a day and vision is blurry for about a week after the procedure. Typically, patients are able to return to work after a week of recuperation.

More than 5 million Americans are at risk for developing glaucoma, the third leading cause of blindness worldwide. In the majority of patients, the cause is unknown, but heredity, trauma and certain drugs may play a role. The risk factors for glaucoma include being older than 40, of African-American descent, a family history of the disease, or having systemic hypertension or diabetes.

To find out more about the surgery, please call 214-648-2020.

To automatically receive news releases from UT Southwestern via e-mail, subscribe at

Staishy Bostick Siem | EurekAlert!
Further information:

More articles from Health and Medicine:

nachricht Advanced analysis of brain structure shape may track progression to Alzheimer's disease
26.10.2016 | Massachusetts General Hospital

nachricht Indian roadside refuse fires produce toxic rainbow
26.10.2016 | Duke University

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

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

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Greater Range and Longer Lifetime

26.10.2016 | Power and Electrical Engineering

VDI presents International Bionic Award of the Schauenburg Foundation

26.10.2016 | Awards Funding

3-D-printed magnets

26.10.2016 | Power and Electrical Engineering

More VideoLinks >>>