Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New lasik research reveals unexpected finding: Key to better-than-20/20 vision is in the flap

13.04.2005


Surgeon’s choice of laser or blade for corneal flap plays role in visual outcome of procedure

New scientific data being presented at this year’s ASCRS meeting reveals the key to a better-than-20/20 outcome in LASIK surgery may depend on whether your doctor uses a blade or a laser to create the corneal flap in the first step of the procedure.
"It turns out that the flap that we make in LASIK is not an innocent bystander," says Roger F. Steinert, M.D., 2005 ASCRS president, professor of ophthalmology, professor of biomedical engineering, director of cornea, refractive and cataract surgery, and vice chair of clinical ophthalmology at University of California, Irvine.


"We now have data validating something we suspected for the past year but hadn’t firmly proven, which is that the rate of achieving high levels of vision is better with the IntraLase laser than with the conventional metal microkeratome. On theoretical grounds we knew flap creation with IntraLase would be safer, and its performance bore that out. But we didn’t anticipate seeing a difference in actual vision. Multiple studies now show higher rates of 20/20, higher rates of better than 20/20, and that Custom treatments show better results as well."

Research Summation

LASIK has always been a two-step process. In the first step, the surgeon makes a thin flap and folds it back for the second step, where an excimer laser is used to ablate corneal tissue for vision correction.

  • Until now, advancements like Custom LASIK and Wavefront have focused on improving the second step (precision of tissue ablation). But new research shows the importance of the first step on visual outcomes. The discovery was made when surgeons began using a new laser, instead of the hand-held microkeratome blade, to create the corneal flap.

  • Doctors found that in addition to fewer complications, more patients achieved vision better than 20/20 -- up to 20/15 and even 20/12.5 -- when the IntraLase laser was used in the first step.

  • When the microkeratome was used to make the corneal flap, surgeons found a greater incidence of high and low spots and irregular hydration on the corneal surface, factors that can compromise the tissue ablation, and with it the visual outcome.

  • Multiple clinical studies show the IntraLase laser provides for better vision by creating an optimal corneal surface under the flap, allowing for more precise vision correction.

Kimberly Goolsby | EurekAlert!
Further information:
http://www.goolsbygroup.com

More articles from Health and Medicine:

nachricht Researchers release the brakes on the immune system
18.10.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn

nachricht Norovirus evades immune system by hiding out in rare gut cells
12.10.2017 | University of Pennsylvania School of Medicine

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: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>