Featured Research

from universities, journals, and other organizations

Cosmic Radiation Associated With Risk Of Cataract In Airline Pilots

Date:
August 9, 2005
Source:
JAMA and Archives Journals
Summary:
Airline pilots have an increased risk of nuclear cataracts [common type of cataract, associated with aging] compared with non-pilots, and that risk is associated with cumulative exposure to cosmic radiation, according to a study in the August issue of Archives of Ophthalmology, one of the JAMA/Archives journals.

CHICAGO -- Airline pilots have an increased risk of nuclear cataracts[common type of cataract, associated with aging] compared withnon-pilots, and that risk is associated with cumulative exposure tocosmic radiation, according to a study in the August issue of Archives of Ophthalmology, one of the JAMA/Archives journals.

Related Articles


Commercial airline pilots are reported to be at an increased riskfor some cancers, but studies on the biological effects of theirexposure to cosmic radiation have been limited, according to backgroundinformation in the article. Previous studies have shown that cataractscan be caused by exposure to radiation, including a recent study ofastronauts showing an association of incidence of cataracts with spaceradiation at exposure levels comparable to those of commercial airlinepilots.

Vilhjalmur Rafnsson, M.D., Ph.D., of the University of Iceland,Reykjavik, and colleagues conducted a case control study involved 445men to determine whether employment as a pilot is associated with lensopacification. The cases included 71 men with nuclear cataract, and thecontrols (n = 374) were those men with different types of lensopacification or without lens opacification. Among the 445 men, 79 werecommercial pilots and 366 had never been pilots. All participants inthe study were 50 years or older and other factors that contribute tocataract risk, including smoking, age and sunbathing, were controlledfor in the statistical analysis. Exposure to cosmic radiation wasassessed based on employment time as pilots, annual number of hoursflown on each aircraft type, time tables, flight profiles andindividual cumulative radiation doses calculated by computer.

Among the 71 cases with nuclear cataract, 15 were employed ascommercial pilots, whereas among the 374 controls (without nuclearcataract), 64 were employed as pilots.

"The odds ratio for nuclear cataract risk among cases andcontrols was 3.02 for pilots compared with nonpilots, adjusted for age,smoking status, and sunbathing habits," the researchers report. Theresearchers found an association between the estimated cumulativeradiation dose and the risk of nuclear cataract.

"The association between the cosmic radiation exposure ofpilots and the risk of nuclear cataracts, adjusted for age, smokingstatus, and sunbathing habits, indicates that cosmic radiation may be acausative factor in nuclear cataracts among commercial airline pilots,"the authors conclude.

###

(Arch Ophthalmol. 2005; 123:1102-1105. Available pre-embargo to the media at www.jamamedia.org.)

Editor's Note: This study was supported by a grant from theUniversity of Iceland Research Fund, and the Helga Jonsdottir andSigurlidi Kristjansson Memorial Fund, Reykjavik, Iceland. All of theauthors have frequently traveled on Icelandair and other airlinecompanies. They have no financial connections with the airline companyor the pilots' union.



Story Source:

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


Cite This Page:

JAMA and Archives Journals. "Cosmic Radiation Associated With Risk Of Cataract In Airline Pilots." ScienceDaily. ScienceDaily, 9 August 2005. <www.sciencedaily.com/releases/2005/08/050809065853.htm>.
JAMA and Archives Journals. (2005, August 9). Cosmic Radiation Associated With Risk Of Cataract In Airline Pilots. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2005/08/050809065853.htm
JAMA and Archives Journals. "Cosmic Radiation Associated With Risk Of Cataract In Airline Pilots." ScienceDaily. www.sciencedaily.com/releases/2005/08/050809065853.htm (accessed October 25, 2014).

Share This



More Space & Time News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: China Launches Moon Orbiter

Raw: China Launches Moon Orbiter

AP (Oct. 24, 2014) China launched an experimental spacecraft Friday to fly around the moon and back to Earth in preparation for the country's first unmanned return trip to the lunar surface. (Oct. 24) Video provided by AP
Powered by NewsLook.com
China Prepares Unmanned Mission To Lunar Orbit

China Prepares Unmanned Mission To Lunar Orbit

Newsy (Oct. 23, 2014) The mission is China's next step toward automated sample-return missions and eventual manned missions to the moon. Video provided by Newsy
Powered by NewsLook.com
Russian Cosmonauts Kick Off Final Spacewalk of 2014

Russian Cosmonauts Kick Off Final Spacewalk of 2014

Reuters - US Online Video (Oct. 22, 2014) Russian cosmonauts Maxim Suraev and Alexander Samokutyaev step outside the International Space Station to perform work on the exterior of the station's Russian module. Rough Cut (no reporter narration) Video provided by Reuters
Powered by NewsLook.com
Comet Siding Spring Grazes Mars' Atmosphere

Comet Siding Spring Grazes Mars' Atmosphere

Newsy (Oct. 19, 2014) A comet from the farthest reaches of the solar system passed extremely close to Mars this weekend, giving astronomers a rare opportunity to study it. Video provided by Newsy
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:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

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