Laser Eye Surgery

... Nobel Intent: Laserless laser surgery may get the green light /* Accessible by controls */ March 30, 2006 @ 12:00AM - posted by Chris Lee Laserless laser surgery may get the green light Lasers, once called a solution looking for a problem, are now ubiquitous in our society.

They have found application in almost every human activity from recreation to heavy industry and especially the medical industry.

The laser is generally employed in these applications in favor of ordinary light because of a property called coherence, which is an inherent property of a stimulated process.

Coherence basically means that each light emitter in the laser (i.e., atoms, molecules or electrons) emits a photon that is exactly in phase (i.e., the wavefronts are all aligned) with the other photons making up the light.

When this is combined with amplification by reflectors then a beam with high temporal and spatial coherence is formed.

For medical usage it is generally the spatial coherence properties, combined with high intensity, which is important.

These properties allow lasers to burn very specific areas of flesh.

For surgical applications that are not on the skin or eye, such as removing small tumors, the laser light is delivered through a fiber optical cable attached to a catheter.

However, most lasers that are suitable for surgical applications emit light whose wavelength is strongly absorbed by water, which limits the tissue penetration depth, making internal surgery a difficult task...

... AFL - Official Website of the Australian Football League Skip to Site Navigation.Skip to Content.

Search with Sensis Search with Sensis Back to of page.

Audio & Video News Season 2006 AFL History Fun & Games AFL Focus Game Development AFL Shop Mobiles Help NewsAFL Record Back to of page.

Latest Headlines more All eyes on BarryThursday, 30 March 2006 What the papers say...Thursday, 30 March 2006 Magpies a challenge: McLeodWednesday, 29 March 2006 Mystery surrounds Hird injuryWednesday, 29 March 2006 Watts selected to take on EaglesWednesday, 29 March 2006 Murphy to debut for "stronger" BluesWednesday, 29 March 2006 Video Features more Ins & Outs Rnd 1 - Part 1Peter Donegan presents the news from the West Coast and St Kilda selection tables.

NAB Cup GF - Best MarksAll the great grabs from the Grand Final of the NAB Cup.

NAB Cup GF - Round RewoundAll the highlights from the Grand Final of the NAB Cup.

NAB Cup GF - Best GoalsAll the great goals from the Grand Final of the NAB Cup.

Feature Stories more Lions' claws still sharpWednesday, 29 March 2006 Season preview: West CoastWednesday, 29 March 2006 Kouta's highs and lowsTuesday, 28 March 2006 Kouta on his 250th ...

LISTEN Season preview: St KildaTuesday, 28 March 2006 Motlop ready to motorTuesday, 28 March 2006 Grant offers reality checkTuesday, 28 March 2006 News All eyes on Barry9:51:33 AM Thu 30 March, 2006Karen CollinsSportal for afl.com.auBarry Hall has been ...

... Stake in rival costs chairman's job Business Previous Articles Dateline Top 50 Markets Personal Bus.

Auto News Consumer Technology Mortgage Rates Consumer Rates Stake in rival costs chairman's job Wednesday, March 29, 2006 By Nicolas Brulliard, The Wall Street Journal In the month before stepping down as chief executive of LCA-Vision Inc., Stephen N.

Joffe spent millions of dollars to buy shares in a rival operator of laser eye-surgery clinics.

That investment cost him more than the money involved - it led to his replacement as chairman of LCA-Vision.

Investors who acquire more than 5 percent of a company's shares must report that holding to the Securities and Exchange Commission.

On March 3, two days after Dr.

Joffe's son took over as interim chief executive, Dr.

Joffe disclosed in an SEC filing that he and his foundation had amassed a 7.7 percent stake in TLC Vision Corp., acquiring the majority of those shares in the prior month for $26.7 million.

The son, interim Chief Executive Craig P.R.

Joffe, said he had no knowledge of his father's investment in Ontario's TLC Vision until after the SEC filing was made.

Craig Joffe said his reaction was "multifaceted" when he learned of his father's investment.

"Surprised is definitely a fair characterization for me as well," he said.

Asked whether the disclosure had affected his relationship with his father, Craig Joffe said, "Yes" but declined to elaborat...