Navigation Links
3-D Movies: Thrills and Ills
Date:7/6/2012

By Randy Dotinga
HealthDay Reporter

FRIDAY, July 6 (HealthDay News) -- "Avatar," "Hugo" and other 3-D movies thrill many viewers, but also make some feel sick, a new study finds.

Young adults and those sitting close to the screen are more likely than older viewers to experience blurred vision, nausea and other symptoms while "immersed" in a 3-D [three-dimensional] film, the researchers found.

"3-D movies are only good as long as you're not feeling terrible," said study lead author Shun-Nan Yang, a senior scientist at Pacific University College of Optometry in Forest Grove, Ore.

Symptoms, which are brief and temporary, are related to visual disturbances and motion sickness. But they can be minimized -- at least if you're watching a 3-D movie at home -- by sitting farther back and gaining a wider viewing angle, Yang said.

Also, an eye doctor may help you resolve any vision issues, Yang added.

Hollywood produced many 3-D movies, which enhance the sense of depth perception, in the 1950s, and even then they could make people queasy. As technology has advanced over the last decade or so, 3-D films have boomed in popularity, but the motion-picture industry has yet to quash the motion-sickness factor.

The new study, funded by the technology company Intel, is the latest to look at how 3-D affects people.

The researchers recruited 203 teens and adults to watch the 2009 family film "Cloudy With a Chance of Meatballs" on a 55-inch LCD television. Some watched it in regular 2-D; others viewed it in 3-D. Viewers were seated at different distances and viewing angles, and questioned about previous viewing symptoms, and any symptoms during or after seeing the film.

Twelve percent of the 2-D viewers reported an increase in symptoms of discomfort, compared with 20 percent of the 3-D viewers. Those who watched the 3-D version were likely to report more eye pain, pulling sensation in the eye, blurred vision, double vision, dizziness and disorientation.

Viewers aged 24 to 34 were bothered more by the 3-D images than older viewers, the researchers found.

The most severe problems reported were headaches and nausea, Yang said. Symptoms could increase within 15 minutes after watching the film, he said, although the problems didn't last into the next day.

Watching movies in 3-D is visually challenging because the eyes must adjust to the fixed closeness of the screen and the seeming distance of the 3-D images, he said. If you're in a movie theater, he said, you may experience fewer symptoms while watching 3-D than viewing the film at home.

Older viewers were less sickened by 3-D than younger viewers, possibly because they're less sensitive to visual stimulation or the deterioration of their eyes makes it easier to handle the near/far discrepancy, he said. Younger viewers reported more "immersion" in the 3-D movie.

Yang said it's a mystery why many viewers have visual or physical complaints after watching ordinary movie images on TV. Those people also said they suffered eye problems when they used computer monitors, he said.

If you're watching a 3-D movie at home, Yang said, you might avoid symptoms by changing where you sit to obtain a different viewing angle or adjusting the brightness of the screen or the lighting in the room. "When you sit closer, you are going to perceive the movie as more real, but you'll have more symptoms," he said.

One solution for children bothered by watching 3-D movies is to let them take off their 3-D glasses and simply watch the blurred movie, said eye doctor Dr. James Salz, a clinical professor of ophthalmology at the University of Southern California and spokesman for the American Academy of Ophthalmology.

He's tried that with his own grandchildren, ages 4 to 7. "They don't complain as they seem more comfortable," he said.

The study appears in the July issue of Optometry and Vision Science.

More information

For more about vision problems, try the U.S. National Library of Medicine.

SOURCES: James J. Salz, M.D., clinical professor, ophthalmology, University of Southern California, and spokesman, American Academy of Ophthalmology, Los Angeles; Shun-Nan Yang, Ph.D., senior scientist, Pacific University College of Optometry, Forest Grove, Ore.; July 2012 Optometry and Vision Science


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
3-D Movies: Thrills and Ills
(Date:10/13/2017)... ... October 13, 2017 , ... Global Healthcare Management’s 4th Annual Kids Fun ... NJ. This free event, sponsored by Global Healthcare Management’s CEO, Jon Letko, is ... is geared towards children of all ages; it is a non-competitive, non-timed event, which ...
(Date:10/13/2017)... ... 13, 2017 , ... “The Journey: From the Mountains to the Mission Field”: ... souls in the Philippines. “The Journey: From the Mountains to the Mission Field” is ... Bible. She has taught all ages and currently teaches a class of ladies at ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the ... today its plans to open a flagship location in Covington, LA at 401 N. ... To Go store next to Office Depot in the Holiday Square shopping center. Its ...
(Date:10/12/2017)... ... 2017 , ... Asante, a nationally recognized health system in ... existing home health joint venture through an agreement, effective October 1, 2017, to ... home health company with Asante, delivering clinically integrated care, for the past eight ...
(Date:10/12/2017)... ... October 12, 2017 , ... Leading pediatric oncology experts at ... for the 49th Congress of the International Society of Paediatric Oncology (SIOP) ... Center for Cancer and Blood Disorders at Children’s National, and Stephen P. ...
Breaking Medicine News(10 mins):
(Date:10/11/2017)... -- Caris Life Sciences ® , a leading innovator in ... medicine, today announced that St. Jude Medical Center,s Crosson ... as its 17 th member. Through participation with ... Institute will help develop standards of care and best ... cancer treatment more precise and effective. ...
(Date:10/10/2017)... , Oct. 10, 2017  NDS received FDA 510(k) clearance in ... medical-grade battery-powered display stand specifically designed for endoscopy environments. An innovative ... into a clinical solution to support the improvement of patient outcomes, ... Design ... Solution ...
(Date:10/5/2017)... Oct. 5, 2017  In response to the ... and Maxillofacial Surgeons (AAOMS) released prescribing recommendations that ... be used as a first-line therapy to manage ... Recognizing the value and ... Paper "Opioid Prescribing: Acute and Postoperative Pain Management" ...
Breaking Medicine Technology: