Navigation Links
Researchers identify an early predictor for glaucoma
Date:1/1/2013

SAN FRANCISCO January 2, 2013 A new study finds that certain changes in blood vessels in the eye's retina can be an early warning that a person is at increased risk for glaucoma, an eye disease that slowly robs people of their peripheral vision. Using diagnostic photos and other data from the Australian Blue Mountains Eye Study, the researchers showed that patients who had abnormally narrow retinal arteries when the study began were also those who were most likely to have glaucoma at its 10-year end point. If confirmed by future research, this finding could give ophthalmologists a new way to identify and treat those who are most vulnerable to vision loss from glaucoma. The study was recently published online by Ophthalmology, the journal of the American Academy of Ophthalmology.

Open-angle glaucoma (OAG), the most common form of the disease, affects nearly three million people in the U.S and 60 million worldwide. Vision loss occurs when glaucoma damages the optic nerve, the part of the eye that transmits images from the retina to the brain. Unfortunately, because glaucoma does not have symptoms, many people don't know they have the disease until a good portion of their sight has been lost. Early detection is critical to treating glaucoma in time to preserve vision.

The findings of the new study, led by Paul Mitchell, M.D., PhD, of the Centre for Vision Research, University of Sydney, supports the concept that abnormal narrowing of retinal blood vessels is an important factor in the earliest stages of OAG. Tracking nearly 2,500 participants, the study found that the OAG risk at the 10-year mark was about four times higher in patients whose retinal arteries had been narrowest when the study began, compared with those who had had the widest arteries.

None of the participants had a diagnosis of OAG at the study's outset. Compared with the study group as a whole, the patients who were diagnosed with OAG by the 10-year mark were older, had had higher blood pressure or higher intraocular pressure at the study's baseline, and were more likely to be female. Elevated intraocular pressure, or pressure within the eye, is often found in patients with OAG. Study results were adjusted for age, family history of glaucoma, smoking, diabetes, hypertension, and other relevant factors.

"Our results suggest that a computer-based imaging tool designed to detect narrowing of the retinal artery caliber, or diameter, could effectively identify those who are most at risk for open-angle glaucoma," said Dr. Mitchell. "Such a tool would also need to account for blood pressure and other factors that can contribute to blood vessel changes. Early detection would allow ophthalmologists to treat patients before optic nerve damage occurs and would give us the best chance of protecting their vision."

A symptomless eye disease like glaucoma highlights the importance of regular eye exams. The American Academy of Ophthalmology recommends that everyone have a complete eye exam by an ophthalmologist at age 40 and stick to the follow-up exam schedule advised by their doctor.

This January during Glaucoma Awareness Month, the Academy encourages people to learn more about the disease known as "the sneak thief of sight." People who have a family history of glaucoma, or who are African-American or Hispanic, may be at higher risk. For more information on glaucoma, its risk factors and treatment options, visit www.geteyesmart.org.


'/>"/>
Contact: Mary Wade
mwade25@gmail.com
415-447-0221
American Academy of Ophthalmology
Source:Eurekalert

Related medicine news :

1. PolyU Researchers Develop Novel Treatment for People with Hemiplegic Arms
2. A Serious Problem: Medical Malpractice Lawyers at Console & Hollawell React to Alarming Doctor Error Statistics from Johns Hopkins University Researchers
3. U of T Researchers uncover major source of evolutionary differences among species
4. MRIs reveal signs of brain injuries not seen in CT scans, UCSF/SFGH researchers report
5. Researchers find model system to study promising cancer drug
6. UNC researchers discover how hepatitis C virus reprograms human liver cells
7. Mayo Clinic researchers identify enzyme linked to prostate cancer
8. Researchers identify role for protein linked to obesity, type 2 diabetes
9. CWRU School of Medicine researchers discover new molecule linked to late-stage breast cancer
10. GOOOAAALLL! What soccer can teach health researchers
11. UAlberta medical researchers discover new potential chemotherapy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/23/2017)... Beach, CA (PRWEB) , ... May 23, 2017 ... ... Certified Facial Plastic and Reconstructive Surgeon Dr. Kevin Sadati, is pleased to announce ... interested in building collagen and elastin in their face, neck, and body through ...
(Date:5/23/2017)... ... May 23, 2017 , ... MedTech ... in the modern ART laboratory, to provide hands-on training utilizing cutting-edge equipment at ... NextGen LifeLabs, a MedTech Group Purchasing vendor , will provide specialized equipment ...
(Date:5/23/2017)... ... May 23, 2017 , ... Orbita’s Nathan Treloar will discuss the role of ... Francisco. Titled Connected Health and IoT: Technology Innovators and Disruption , the workshop ... Associates, a market research and consulting firm specializing in emerging consumer technology products and ...
(Date:5/23/2017)... ... ... Therachat , a smart guided journaling tool for improving mental health, ... of anxiety in support of National Mental Health Awareness Month. , The nationwide survey ... general anxiety levels as well as identified the top triggers, impact to regular activities ...
(Date:5/22/2017)... ... 2017 , ... Patients who avoid necessary dental and endodontic treatments because of ... NY from Advanced Endodontics of Westchester. This highly-trained team of endodontists offer three different ... sedation methods may be recommended based on the severity of the anxiety experienced by ...
Breaking Medicine News(10 mins):
(Date:5/15/2017)... 2017  Amy Baxter MD, chief executive officer and ... pain relief, was awarded a 2017 Top 40 Healthcare ... recognized at the MM&M Top 40 Healthcare Transformers dinner ... on May 10, 2017. The dinner followed a ... "beyond the pill."  "Innovation goes beyond invention," ...
(Date:5/10/2017)... , May 10, 2017 Global Health Intelligence ... Latin America , published its 2017 ranking of ... is based on extensive data analysis from GHI,s hospitals ... hospitals database for the region. The GHI database covers 86% ... offering more than 130 data points for each institution in ...
(Date:5/9/2017)... , May 9, 2017  Demonstrating its ... board of directors for the Pharmaceutical Research and ... for membership. Biopharmaceutical companies will now have to ... order to be eligible to join PhRMA. ... the board is sending a clear message that ...
Breaking Medicine Technology: