Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Probability of blindness from glaucoma has nearly halved

22.01.2014
Researchers cite advances in diagnosis and therapy as likely causes for reduction; caution that a significant proportion of devastating eye disease sufferers still progress to blindness

The probability of blindness due to the serious eye disease glaucoma has decreased by nearly half since 1980, according to a study published this month in Ophthalmology, the journal of the American Academy of Ophthalmology.

The researchers speculate that advances in diagnosis and therapy are likely causes for the decrease, but caution that a significant proportion of patients still progress to blindness.

A leading cause of irreversible blindness worldwide, glaucoma affects more than 2.7 million individuals aged 40 and older in the United States and 60.5 million people globally. Significant changes in diagnostic criteria, new therapies and tools as well as improvements in glaucoma management techniques have benefited individual patients; however their effect on the rates of visual impairment on a population level has remained unclear. This study, conducted by a team based at the Mayo Clinic, was the first to assess long-term changes in the risk of progression to blindness and the population incidence of glaucoma-related blindness. By identifying epidemiologic trends in glaucoma, the researchers hope to gain insight into best practices for the distribution of health and medical resources, as well as management approaches for entire populations.

The researchers reviewed every incident case (857 cases total) of open-angle glaucoma (OAG)--the most common form of glaucoma--diagnosed from 1965 to 2009 in Olmsted County, Minn., one of the few places in the world where long-term population-based studies are conducted. They found that the 20-year probability and the population incidence of blindness due to OAG in at least one eye had decreased from 25.8 percent for subjects diagnosed between 1965 and 1980 to 13.5 percent for those diagnosed between 1981 and 2000. The population incidence of blindness within 10 years of diagnosis also decreased from 8.7 per 100,000 to 5.5 per 100,000 for those groups, respectively. Yet, 15 percent of the patients diagnosed in the more recent timeframe still progressed to blindness.

"These results are extremely encouraging for both those suffering from glaucoma and the doctors who care for them, and suggest that the improvements in the diagnosis and treatment have played a key role in improving outcomes," said Arthur J. Sit, M.D., associate professor of ophthalmology at the Mayo Clinic College of Medicine and lead researcher for the study. "Despite this good news, the rate at which people continue to go blind due to OAG is still unacceptably high. This is likely due to late diagnosis and our incomplete understanding of glaucoma, so it is critical that research into this devastating disease continues, and all eye care providers be vigilant in looking for early signs of glaucoma during routine exams."

The American Academy of Ophthalmology recommends that all adults receive a baseline eye exam by age 40, and for seniors age 65 and older to have an eye exam every one to two years or as directed by an ophthalmologist. For more information about glaucoma and other eye conditions, visit http://www.geteyesmart.org.

About the American Academy of Ophthalmology

The American Academy of Ophthalmology, headquartered in San Francisco, is the world's largest association of eye physicians and surgeons--Eye M.D.s--with more than 32,000 members worldwide. Eye health care is provided by the three "O's" – ophthalmologists, optometrists, and opticians. It is the ophthalmologist, or Eye M.D., who has the education and training to treat it all: eye diseases, infections and injuries, and perform eye surgery. For more information, visit http://www.aao.org. The Academy's EyeSmart® program educates the public about the importance of eye health and empowers them to preserve healthy vision. EyeSmart provides the most trusted and medically accurate information about eye diseases, conditions and injuries. OjosSanos™ is the Spanish-language version of the program. Visit http://www.geteyesmart.org or http://www.ojossanos.org to learn more.

About Ophthalmology

Ophthalmology, the official journal of the American Academy of Ophthalmology, publishes original, peer-reviewed, clinically applicable research. Topics include the results of clinical trials, new diagnostic and surgical techniques, treatment methods technology assessments, translational science reviews and editorials.

Media Relations | EurekAlert!
Further information:
http://www.aao.org

More articles from Health and Medicine:

nachricht Nanotubes are beacons in cancer-imaging technique
23.05.2016 | Rice University

nachricht More light on cancer
20.05.2016 | Lomonosov Moscow State 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: Worldwide Success of Tyrolean Wastewater Treatment Technology

A biological and energy-efficient process, developed and patented by the University of Innsbruck, converts nitrogen compounds in wastewater treatment facilities into harmless atmospheric nitrogen gas. This innovative technology is now being refined and marketed jointly with the United States’ DC Water and Sewer Authority (DC Water). The largest DEMON®-system in a wastewater treatment plant is currently being built in Washington, DC.

The DEMON®-system was developed and patented by the University of Innsbruck 11 years ago. Today this successful technology has been implemented in about 70...

Im Focus: Computational high-throughput screening finds hard magnets containing less rare earth elements

Permanent magnets are very important for technologies of the future like electromobility and renewable energy, and rare earth elements (REE) are necessary for their manufacture. The Fraunhofer Institute for Mechanics of Materials IWM in Freiburg, Germany, has now succeeded in identifying promising approaches and materials for new permanent magnets through use of an in-house simulation process based on high-throughput screening (HTS). The team was able to improve magnetic properties this way and at the same time replaced REE with elements that are less expensive and readily available. The results were published in the online technical journal “Scientific Reports”.

The starting point for IWM researchers Wolfgang Körner, Georg Krugel, and Christian Elsässer was a neodymium-iron-nitrogen compound based on a type of...

Im Focus: Atomic precision: technologies for the next-but-one generation of microchips

In the Beyond EUV project, the Fraunhofer Institutes for Laser Technology ILT in Aachen and for Applied Optics and Precision Engineering IOF in Jena are developing key technologies for the manufacture of a new generation of microchips using EUV radiation at a wavelength of 6.7 nm. The resulting structures are barely thicker than single atoms, and they make it possible to produce extremely integrated circuits for such items as wearables or mind-controlled prosthetic limbs.

In 1965 Gordon Moore formulated the law that came to be named after him, which states that the complexity of integrated circuits doubles every one to two...

Im Focus: Researchers demonstrate size quantization of Dirac fermions in graphene

Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices

Quantum mechanics is the field of physics governing the behavior of things on atomic scales, where things work very differently from our everyday world.

Im Focus: Graphene: A quantum of current

When current comes in discrete packages: Viennese scientists unravel the quantum properties of the carbon material graphene

In 2010 the Nobel Prize in physics was awarded for the discovery of the exceptional material graphene, which consists of a single layer of carbon atoms...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Networking 4.0: International Laser Technology Congress AKL’16 Shows New Ways of Cooperations

24.05.2016 | Event News

Challenges of rural labor markets

20.05.2016 | Event News

International expert meeting “Health Business Connect” in France

19.05.2016 | Event News

 
Latest News

11 million Euros for research into magnetic field sensors for medical diagnostics

27.05.2016 | Awards Funding

Fungi – a promising source of chemical diversity

27.05.2016 | Life Sciences

New Model of T Cell Activation

27.05.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>