Featured Research

from universities, journals, and other organizations

Common corneal condition associated with increased eye pressure

Date:
November 9, 2010
Source:
JAMA and Archives Journals
Summary:
Corneal arcus, a condition in which a ring of lipids builds up around the cornea, appears common among middle-age and older adults and may be associated with elevated eye pressure, according to new study.

Corneal arcus, a condition in which a ring of lipids builds up around the cornea, appears common among middle-age and older adults and may be associated with elevated eye pressure, according to a report in the November issue of Archives of Ophthalmology, one of the JAMA/Archives journals.

Intraocular pressure (the pressure inside the eye) is the only treatable risk factor for glaucoma, the leading cause of irreversible blindness worldwide, according to background information in the article. "The accuracy of intraocular pressure measurement is crucial in the diagnosis and management of glaucoma," the authors write. Some characteristics of the cornea (the clear front portion of the eye), including its thickness at the center and the radius of its curve, are known to affect the accuracy of this measurement.

The effect of corneal arcus -- an area of lipid deposition that creates a ring around the cornea and may be associated with cardiovascular disease -- on the structure and function of the cornea and on intraocular pressure is not well understood. Renyi Wu, M.D., Ph.D., of the Singapore Eye Research Institute, and colleagues examined the prevalence and consequences of corneal arcus among 3,015 individuals age 40 to 80. Participants underwent an interview and eye examinations, including corneal measurements, assessment of intraocular pressure and identification of corneal arcus using a slitlamp.

Corneal arcus was present in the right eyes of 1,747 participants (57.9 percent). After adjustments for age, sex and other factors, eyes with corneal arcus tended to have higher intraocular pressure, thicker corneas and altered corneal curvatures. The prevalence of high eye pressure but not of glaucoma was higher among participants with corneal arcus than those without (3.2 percent vs. 1.8 percent).

"There is no known explanation for the association of corneal arcus with higher intraocular pressure," the authors write. "There may be changes in biomechanical properties of the cornea in eyes with corneal arcus, as such mechanisms are emerging as important clinical variables that may affect intraocular pressure measurements."

"Further research is required to investigate the clinical implications of these findings for intraocular pressure assessment in eyes with corneal arcus," the authors conclude.


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Journal Reference:

  1. R. Wu, T.-Y. Wong, S.-M. Saw, H. Cajucom-Uy, M. Rosman, T. Aung. Effect of Corneal Arcus on Central Corneal Thickness, Intraocular Pressure, and Primary Open-angle Glaucoma: The Singapore Malay Eye Study. Archives of Ophthalmology, 2010; 128 (11): 1455 DOI: 10.1001/archophthalmol.2010.252

Cite This Page:

JAMA and Archives Journals. "Common corneal condition associated with increased eye pressure." ScienceDaily. ScienceDaily, 9 November 2010. <www.sciencedaily.com/releases/2010/11/101108161133.htm>.
JAMA and Archives Journals. (2010, November 9). Common corneal condition associated with increased eye pressure. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2010/11/101108161133.htm
JAMA and Archives Journals. "Common corneal condition associated with increased eye pressure." ScienceDaily. www.sciencedaily.com/releases/2010/11/101108161133.htm (accessed September 2, 2014).

Share This




More Health & Medicine News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Snack Attack: Study Says Action Movies Make You Snack More

Snack Attack: Study Says Action Movies Make You Snack More

Newsy (Sep. 2, 2014) You're more likely to gain weight while watching action flicks than you are watching other types of programming, says a new study published in JAMA. Video provided by Newsy
Powered by NewsLook.com
U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Doctors Fear They're Losing Battle Against Ebola

Doctors Fear They're Losing Battle Against Ebola

AP (Sep. 2, 2014) As a third American missionary is confirmed to have contracted Ebola in Liberia, doctors on the ground in West Africa fear they're losing the battle against the outbreak. (Sept. 2) Video provided by AP
Powered by NewsLook.com
Tech Giants Bet on 3D Headsets for Gaming, Healthcare

Tech Giants Bet on 3D Headsets for Gaming, Healthcare

AFP (Sep. 2, 2014) When Facebook acquired the virtual reality hardware developer Oculus VR in March for $2 billion, CEO Mark Zuckerberg hailed the firm's technology as "a new communication platform." Duration: 02:24 Video provided by AFP
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