Featured Research

from universities, journals, and other organizations

First Report on Worldwide Prevalence of Retinal Vein Occlusion

Date:
February 1, 2010
Source:
American Academy of Ophthalmology
Summary:
Ophthalmologists recognize retinal vein occlusion (RVO), commonly called "eye stroke," as a serious disease and significant cause of blindness. Surprisingly, the magnitude of the problem had been unclear prior to this first report on worldwide RVO prevalence by the International Eye Disease Consortium (IEDC). Based on data from 15 major population studies in the United States, Europe, Asia and Australia, the IEDC estimates that globally, 16.4 million adults are affected by RVO.

Ophthalmologists recognize retinal vein occlusion (RVO), commonly called "eye stroke," as a serious disease and significant cause of blindness. Surprisingly, the magnitude of the problem had been unclear prior to this first report on worldwide RVO prevalence by the International Eye Disease Consortium (IEDC). Based on data from 15 major population studies in the United States, Europe, Asia and Australia, the IEDC estimates that globally, 16.4 million adults are affected by RVO.

For comparison, more than 131 million adults with diabetes worldwide either have diabetic retinopathy or are at risk of developing this potentially blinding disease, according to a 2005 World Health Organization report.

In central and branch retinal vein occlusion (CRVO and BRVO), vision impairment and eye damage occur when the vein becomes blocked, usually by a blood clot. This leads to reduced blood flow, hemorrhage and/or swelling in the retina, the light-sensitive tissue at the back of the eye that receives images and relays them to the optic nerve. An estimated 13.9 million people worldwide are affected by BRVO, and 2.5 million by CRVO, the IEDC report found. Prevalence is similar in men and women and increases with age, probably because of age-related increases in arteriosclerosis, hypertension and glaucoma or elevated intraocular pressure. Although BRVO prevalence appears to be highest in Asians and Hispanics and lowest in whites, the authors say this may reflect varying methodologies or definitions among reviewed studies rather than true ethnic differences.

"We need to understand how hypertension and other cardiovascular risk factors impact BRVO and CRVO, and how glaucoma impacts CRVO, in various ethnic groups and populations so that appropriate preventive and treatment strategies can be designed," said Tien Y. Wong, MD., PhD, lead investigator for the IEDC.

This research was published in the February issue of Ophthalmology, the journal of the American Academy of Ophthalmology.


Story Source:

The above story is based on materials provided by American Academy of Ophthalmology. Note: Materials may be edited for content and length.


Cite This Page:

American Academy of Ophthalmology. "First Report on Worldwide Prevalence of Retinal Vein Occlusion." ScienceDaily. ScienceDaily, 1 February 2010. <www.sciencedaily.com/releases/2010/02/100201113748.htm>.
American Academy of Ophthalmology. (2010, February 1). First Report on Worldwide Prevalence of Retinal Vein Occlusion. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2010/02/100201113748.htm
American Academy of Ophthalmology. "First Report on Worldwide Prevalence of Retinal Vein Occlusion." ScienceDaily. www.sciencedaily.com/releases/2010/02/100201113748.htm (accessed September 22, 2014).

Share This



More Health & Medicine News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Liberia Pleads for Help to Fight Ebola

Liberia Pleads for Help to Fight Ebola

AP (Sep. 22, 2014) Liberia's finance minister is urging the international community to quickly follow through on pledges of cash to battle Ebola. Bodies are piling up in the capital Monrovia as the nation awaits more help. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Ebola Doctor Says Border Controls Critical

Ebola Doctor Says Border Controls Critical

AP (Sep. 22, 2014) A Florida doctor who helped fight the expanding Ebola outbreak in West Africa says the disease can be stopped, but only if nations quickly step up their response and make border control a priority. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Global Ebola Aid Increasing But Critics Say It's Late

Global Ebola Aid Increasing But Critics Say It's Late

Newsy (Sep. 21, 2014) More than 100 tons of medical supplies were sent to West Africa on Saturday, but aid workers say the global response is still sluggish. Video provided by Newsy
Powered by NewsLook.com
Sierra Leone in Lockdown to Control Ebola

Sierra Leone in Lockdown to Control Ebola

AP (Sep. 21, 2014) Sierra Leone residents remained in lockdown on Saturday as part of a massive effort to confine millions of people to their homes in a bid to stem the biggest Ebola outbreak in history. (Sept. 20) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins