The ophthalmologist who pioneered customized LASIK surgery – supervision – now aims to further improve patients’ eyesight and minimize the risk of side effects. Patients should benefit from several recent discoveries, Scott MacRae, M.D., told an audience of eye doctors in a keynote address at the annual meeting of the American Academy of Ophthalmology last month.
The techniques appear crucial for minimizing unwanted side effects and allowing patients, most of whom now have vision of 20/16 or better, to enjoy the full effects of a type of enhanced vision that wasn’t even a twinkle in the eye of doctors 20 years ago. "We’re trying to improve upon something where people already come out and say, "Wow, I’ve never seen that well." We’re learning how to make an extremely effective surgery even better," says MacRae, professor of Ophthalmology and Visual Science at the University of Rochester Medical Center and medical director of Strong Vision.
The field of supervision or "customized ablation" had its genesis in laboratory work in the early 1990s at the University of Rochester, where a team led by David Williams discovered how to use a laser beam to take the best images ever of the inner eye in people, then used the new technology to discover dozens of defects – "higher-order aberrations" – in our vision that were previously unknown.
Since the field is still emerging, it’s crucial for patients to choose their physician carefully, says MacRae, who has been honored nationally for his work and who is an author of the book Wavefront Customized Visual Correction: The Quest for Supervision II. While price is always a concern for consumers, MacRae says that sometimes a higher price covers costs that contribute to patient safety. For instance, a doctor like MacRae turns away significant business after investing hours with a patient because he discovers that many patients – around 20 percent – are not good candidates for refractive surgery and might have troublesome side effects. MacRae and other top doctors also use extensive, seemingly repetitive screening techniques to check traits such as the thickness of a person’s cornea, which is crucial to the surgery, as well as the characteristics of a patient’s pupil.
"The bottom line is that if you use state-of-the-art techniques and you choose your patients carefully, you should get outstanding results. While most of our patients are ecstatic with the results, the field is so young that there are constantly discoveries that should improve patients’ vision even more," says MacRae, who has helped train nearly 1,000 physicians around the country about refractive surgery.
Tom Rickey | EurekAlert!
New malaria analysis method reveals disease severity in minutes
14.08.2017 | University of British Columbia
New type of blood cells work as indicators of autoimmunity
14.08.2017 | Instituto de Medicina Molecular
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
18.08.2017 | Life Sciences
18.08.2017 | Physics and Astronomy
18.08.2017 | Materials Sciences