Featured Research

from universities, journals, and other organizations

Is arm length the reason women need reading glasses sooner than men?

Date:
June 23, 2012
Source:
Association for Research in Vision and Ophthalmology (ARVO)
Summary:
Studies have consistently reported that women require reading glasses or bifocal lenses earlier than men. According to a recent article, the gender difference is caused by factors other than focusing ability, such as arm length or preferred reading distance, which should be considered when prescribing readers or bifocals.

Studies have consistently reported that women require reading glasses or bifocal lenses earlier than men. According to a recent Investigative Ophthalmology & Visual Science paper, the gender difference is caused by factors other than focusing ability, such as arm length or preferred reading distance, which should be considered when prescribing readers or bifocals.

The new evidence was found by a team of researchers who performed a meta-analysis using nine cross-sectional studies to compare the prevalence and magnitude of presbyopia -- commonly described as the loss of near vision that occurs with age -- among men and women. The researchers further subdivided the analysis to determine what differences in presbyopia might exist between men and women.

The new evidence was found by a team of researchers who performed a meta-analysis using nine cross-sectional studies to compare the prevalence and magnitude of presbyopia -- commonly described as the loss of near vision that occurs with age -- among men and women. The researchers further subdivided the analysis to determine what differences in presbyopia might exist between men and women.

While the results of a subgroup of studies showed that there was no significant gender-related difference in the eye's ability to focus clearly on objects at near distances, the overall analysis provided evidence that women have a need for higher power reading glasses or bifocals than men of an equivalent age. According to the researchers, this discrepancy is likely due to differences in preferred reading distances or arm length as women tend to hold reading materials closer than men do.

"These findings could impact global vision care in multiple ways," said Hickenbotham. "The findings reinforce the need for presbyopia correction programs for women -- a group that often has greater unmet vision needs in developing countries. It also points out that presbyopia is a multi-factorial problem and requires solutions that are tailored to each individual."

While the researchers urge clinicians to do more than measure the eye's ability to focus when diagnosing presbyopia, they also suggest more carefully performed studies be conducted that better isolate and measure the various factors that contribute to its development. In particular, the paper states longitudinal studies that consider the interaction between the preferred reading distance and the change in accommodative amplitude across time for males and females could help determine to what extent biological factors or environmental factors plays a role in the loss of focusing ability with increasing age.


Story Source:

The above story is based on materials provided by Association for Research in Vision and Ophthalmology (ARVO). Note: Materials may be edited for content and length.


Journal Reference:

  1. A. Hickenbotham, A. Roorda, C. Steinmaus, A. Glasser. Meta-Analysis of Sex Differences in Presbyopia. Investigative Ophthalmology & Visual Science, 2012; 53 (6): 3215 DOI: 10.1167/iovs.12-9791

Cite This Page:

Association for Research in Vision and Ophthalmology (ARVO). "Is arm length the reason women need reading glasses sooner than men?." ScienceDaily. ScienceDaily, 23 June 2012. <www.sciencedaily.com/releases/2012/06/120623144946.htm>.
Association for Research in Vision and Ophthalmology (ARVO). (2012, June 23). Is arm length the reason women need reading glasses sooner than men?. ScienceDaily. Retrieved August 21, 2014 from www.sciencedaily.com/releases/2012/06/120623144946.htm
Association for Research in Vision and Ophthalmology (ARVO). "Is arm length the reason women need reading glasses sooner than men?." ScienceDaily. www.sciencedaily.com/releases/2012/06/120623144946.htm (accessed August 21, 2014).

Share This




More Health & Medicine News

Thursday, August 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Cadavers, a Teen, and a Medical School Dream

Cadavers, a Teen, and a Medical School Dream

AP (Aug. 21, 2014) — Contains graphic content. He's only 17. But Johntrell Bowles has wanted to be a doctor from a young age, despite the odds against him. He was recently the youngest participant in a cadaver program at the Indiana University NW medical school. (Aug. 21) Video provided by AP
Powered by NewsLook.com
Possible Ebola Patient in Isolation at California Hospital

Possible Ebola Patient in Isolation at California Hospital

Reuters - US Online Video (Aug. 20, 2014) — A patient who may have been exposed to the Ebola virus is in isolation at the Kaiser Permanente South Sacramento Medical Center. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Reasons Why Teen Birth Rates Are At An All-Time Low

Reasons Why Teen Birth Rates Are At An All-Time Low

Newsy (Aug. 20, 2014) — A CDC report says birth rates among teenagers have been declining for decades, reaching a new low in 2013. We look at several popular explanations. Video provided by Newsy
Powered by NewsLook.com
Common Antibiotic Could Lead To Heart-Related Death

Common Antibiotic Could Lead To Heart-Related Death

Newsy (Aug. 20, 2014) — Danish researchers discovered patients taking clarithromycin have an increased risk of dying from a heart-related issue. 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:
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