Computer vision syndrome ( CVS ) is a condition that results from focusing the eyes on a computer or other display device for long periods of time and is not interrupted and the eye muscles can not recover from tension because lack of adequate sleep. Some CVS symptoms include headache, blurred vision, neck pain, tiredness, eye strain, dry eyes, irritation eyes, double vision, vertigo/dizziness, polyopia, and difficulty refocusing the eyes. These symptoms can be further exacerbated by incorrect lighting conditions (ie glare, strong blue-spectrum backlight, or overhead lighting) or air traveling through the eye (eg air vents, direct air from fan).
Video Computer vision syndrome
Therapy
The asthenopic symptoms (eyes distended) in the eye are responsible for much severity in CVS. An appropriate rest for the eyes and muscles is recommended to relieve the associated eye tension. The observation of people with chronic eye strain has shown that most people who claim to have adequate sleep do not. This, they do not realize, causes eye strain to build up over a period of time, when if they only get seven to eight hours of uninterrupted sleep, their eye muscles will recover during sleep and the tension will not accumulate..
Computer workers are often advised to rest and look at distant objects. The recommended approach on a regular basis is to consciously blink an eye every now and then (this helps refill the tear film) and look out the window to a distant object or to the sky - thereby providing a break to the ciliary muscles. One catch phrase is "20 20 20 rules": every 20 minutes, the eye focus on a 20 feet (6 meters) object for 20 seconds. It basically provides a convenient distance and time frame for someone to follow the advice of optometrist and optometrist. If not, the patient is advised to close his eyes (which has a similar effect) and relax the facial and neck muscles for two minutes, at least every half hour.
A number of computer and smartphone applications, such as f.lux, redshift, and Night Shift adjust the color temperature of computer video, reducing the amount of blue light emitted by the screen, especially at night.
Dry eye is a symptom targeted in CVS therapy. The use of an over-the-counter artificial-tear solution can reduce the effects of dry eye on CVS. Before using an artificial tear solution, it is necessary to check whether dry eye is the true cause of the problem (measured by a meniscus tear test) or whether there are no symptoms of dry eye at all. Dry eyes because CVS can also be treated by using moisture room goggles or humidifier machines. Office space with artificial dry air may aggravate CVS syndrome, in this case, the desktop or moisturizer can help the eye maintain a healthy level of moisture.
At night, CVS can get worse. It is recommended to use the dark user interface while working at night on the computer. Several OS browsers and add-ons exist to darken the user interface.
When working on a computer screen, people tend to blink less which leads to drying eyes faster. Reminding people to blink or doing blinking exercises is achieved through static reminders (such as eyeleo).
Real time-based real time flash reminders (such as VisionProtect) actively measure the user's blink rate and notify users via visual/sound warnings. The effectiveness of time-based reminder-based feedback systems is evident in a study by Osamu Fukushima and Masao Saito.
A randomized controlled trial of 2017 evaluated macular carotenoid supplements (lutein, zeaxanthin, and mesozeaxanthin) in people with high screen usage time. The supplement group had statistically significant reductions in self-reported headache, eye strain, eyestrain and sleep complaints, but no reduction in neck tension or blurred vision.
Glasses
Decreased focusing ability is reduced by wearing a pair of plus-powered small over-the-counter glasses (1.00 to 1.50). Wearing these glasses helps the patient regain his ability to focus on near objects. People involved in other jobs - such as tailors who engage in embroidery - can experience similar symptoms and can be helped by these glasses.
A Pacific University research study of 36 participants found significant differences in irritation or burning of the eyes, watery eyes, watery eyes, dry eyes, and tired eyes, each fixed by a yellow lens compared to a placebo lens, but in follow-up. studying in 2008, the same team can not reproduce the results of the first study.
Competing research has shown the blue light filtering lens reduces the specific aspect of light emission. The theoretical reduction in phototoxicity was 10.6% to 23.6%. In addition, melatonin suppression was reduced by 5.8% to 15.0% and scrotastic sensitivity by 2.4% to 9.6%. More than 70% of participants in this test can not detect this change. Technology expansion has led to more people using computers and televisions that increase overall exposure to blue light. This has opened up opportunities for companies like Gunnar Optiks and Razer Inc. to make the glasses focused on reducing blue light exposure.
Yellow lenses have been shown to affect circadian rhythms and treat delayed sleep phase disorders.
Maps Computer vision syndrome
Prevalence
According to the US National Institute for Occupational Safety and Health, computer vision syndrome affects about 90% of people who spend three hours or more each day on a computer. Another study in Malaysia was conducted on 795 students aged between 18 and 25. The students suffered headaches along with eyestrain, with 89.9% of the students surveyed feeling all types of CVS symptoms. Americans spend an average of 8 hours a day in front of the screen, whether it's a television screen, a phone/tablet, or a computer screen. This has increased the prevalence of individuals affected by computer vision syndrome.
See also
- Asthenopia
- Electronic and sleeping media
- List of repetitive strain injury software (rest reminder)
- Photophobia
- Repetitive strain injury
- Presbyopia
- The visual looming syndrome
References
External links
- "Computer Vision Syndrome (CVS)". American Optometry Association. 2017.
- the AllAboutVision.com page on CVS
- Zheng Yan, Liang Hu, Hao Chen and Fan Lu (September 2008). "Computer Vision Syndrome: A widely spread but unknown epidemic among computer users" (PDF) . Computers in Human Behavior . 24 (5): 2026-2042. doi: 10.1016/j.chb.2007.09.004. CS1 maint: Many names: list of authors (links)
Source of the article : Wikipedia
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