Featured Research

from universities, journals, and other organizations

Comprehensive, accessible vision testing device for children developed

Date:
August 30, 2012
Source:
University of Tennessee
Summary:
Eighty-five percent of children's learning is related to vision. Yet in the U.S., 80 percent of children have never had an eye exam or any vision screening before kindergarten, statistics say. When they do, the vision screenings they typically receive can detect only one or two conditions.

Eighty-five percent of children's learning is related to vision. Yet in the U.S., 80 percent of children have never had an eye exam or any vision screening before kindergarten, statistics say. When they do, the vision screenings they typically receive can detect only one or two conditions.

Three researchers at the University of Tennessee Space Institute in Tullahoma are working to change that with an invention that makes children eye exams inexpensive, comprehensive, and simple to administer.

"Eye exams can do so much more than just test vision," said Ying-Ling Ann Chen, device inventor and research assistant professor in physics. "They can detect learning disabilities, such as dyslexia, or neural disorders such as autism. By not testing our youth, we are potentially missing the window for effective treatment for a lot of conditions."

Called the Dynamic Ocular Evaluation System (DOES), the device was developed by Chen; Lei Shi, post-doctoral research associate in laser application; and Jim Lewis, professor emeritus in physics. The researchers hope the device will someday be used in pediatricians' offices across the country, and then expanded to other groups within population.

DOES is low-cost, high-quality and operator- and child-friendly. It takes about a minute to train someone to use it. The test is done as the child watches a three-minute cartoon or plays a computer game. Infrared light is used to analyze the binocular condition and the assessment is reported on-site within a minute. Neither eye dilation nor verbal response is required.

At the beginning of the cartoon, a three-second comprehensive test screens for binocular refractive risks, high-order aberration, scattering, ocular alignment and significant neural problems. The subsequent dynamic test searches for less significant signs of abnormal ocular alignment, neural responses, amblyopia, and -- in the future -- mental statuses that include dyslexia, attention deficit hyperactivity disorder, post-traumatic stress disorder and autism. The images and results are digitally recorded and can be electronically transmitted to specialists for referral if necessary.

"Vision screening is important at an early age to detect several different causes of vision disorders," said Chen. "The few children that do get screened today aren't being screened adequately. For instance, many current screening methods do one eye at a time and studies show young eyes will accommodate significantly, and this causes inaccurate results."

According to Chen, children usually do not visit eye doctors unless their eyes hurt. They do not know if their vision is impaired because they do not know what they should be seeing. By having easy-to-administer comprehensive tests as part of the pediatrician's visit, a lot of vision and vision-related diseases could be avoided or treated more effectively -- such as lazy eye and cross eyes, which impacts up to 5 percent of the U.S. population.

"During the critical period of childhood up until about age six, if one eye is not as good as the other, the brain will suppress the communication with that eye, and the vision could be lost permanently," said Chen. "This can cause a condition called amblyopia, or lazy eye, which can be prevented through detection."

The researchers are currently performing a clinical test at Tullahoma's Walmart Vision Center to test children's response to the cartoon and to compare their results to doctor's exams. They recently received $15,000 from the UT Research Foundation to assist in further developing the technology to improve positioning for licensing and commercialization. The scientists say they have industry interested in taking their invention to market.


Story Source:

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


Cite This Page:

University of Tennessee. "Comprehensive, accessible vision testing device for children developed." ScienceDaily. ScienceDaily, 30 August 2012. <www.sciencedaily.com/releases/2012/08/120830125852.htm>.
University of Tennessee. (2012, August 30). Comprehensive, accessible vision testing device for children developed. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2012/08/120830125852.htm
University of Tennessee. "Comprehensive, accessible vision testing device for children developed." ScienceDaily. www.sciencedaily.com/releases/2012/08/120830125852.htm (accessed April 19, 2014).

Share This



More Mind & Brain News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Study On Artists' Brain Shows They're 'Structurally Unique'

Study On Artists' Brain Shows They're 'Structurally Unique'

Newsy (Apr. 17, 2014) The brains of artists aren't really left-brain or right-brain, but rather have extra neural matter in visual and motor control areas. Video provided by Newsy
Powered by NewsLook.com
Is Apathy A Sign Of A Shrinking Brain?

Is Apathy A Sign Of A Shrinking Brain?

Newsy (Apr. 17, 2014) A recent study links apathetic feelings to a smaller brain. Researchers say the results indicate a need for apathy screening for at-risk seniors. Video provided by Newsy
Powered by NewsLook.com
Are School Dress Codes Too Strict?

Are School Dress Codes Too Strict?

AP (Apr. 16, 2014) Pushing the limits on style and self-expression is a rite of passage for teens and even younger kids. How far should schools go with their dress codes? The courts have sided with schools in an era when school safety is paramount. (April 16) Video provided by AP
Powered by NewsLook.com
Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. 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