computer vision syndrome (CVS) DR RAGHU NAGARAJU

Category: Entertainment

Presentation Description

computer users are prone to develop eye problems . all the symptoms and signs together calles as CVS


Presentation Transcript

Computer vision syndrome :


What is CVS?:

What is CVS? “A complex of eye and vision problems related to near work experienced during computer use.”

Slide 6:

% (N=520) reporting symptoms “at least half of the time”. 1. Tired eyes (40%) 2. Dry eyes (32%) 3. Eyestrain or eye discomfort (31%) 4. Irritated or burning eyes (28%). 5. Light sensitivity (26%) Blur at distance (23%) or near (17%)

Slide 7:

Blink rate decreases to as low as 6–8 blinks/minute while focusing on the computer screen. The normal blink rate is 16–20 per minute. CVS affects 90% of people who spend more than three hours a day at a computer.


Prevention O ver-the-counter artificial-tear solutions Proper rest C onsciously blink Often look out the window to a distant object C lose eyes for 20 seconds, at least every 2 hour "20-20-20 rule": every 20 minutes, focus the eyes on an object 20 feet away for 20 seconds. Minimize glare Update display Adjust brightness/contrast

Recommended Workstation:

Recommended Workstation

Slide 10:

Only when your eyes can focus clearly at the plane of proper distance on the computer screen can they experience relief from the fatiguing effects of CVS. An anti-reflective coating (AR) is recommended on all computer eyeglasses. An AR coating prevents glare and reflections on the front and the back of the lenses that would interfere with focusing on the screen Will Glare Screens Prevent CVS .

Slide 11:

Get a computer eye examination Use proper lighting Minimize glare. Adjust the brightness of your computer screen Blink more often Exercise and stretch your eyes Take frequent breaks Modify your workstation. Exercise even when sitting Get your eye checked regularly

The Solution:

The Solution Keep computer screens slightly below eye level 20-26 inch from the screen Keep contrast & brightness at moderate levels Keep screen clean Reduce screen glare Frequent short breaks Purposely blink rapidly

Slide 13:

Food sources: Carrot, mango, sweet potato, papaya, cod liver oil, liver.

Slide 14:

Lutein and zeaxanthin found in green leafy vegetables, as well as other foods, such as eggs. They reduce the risk of chronic eye diseases, including age-related macular degeneration and cataracts. ಪಾಲಕ್

Slide 15:

Vitamin C (ascorbic acid) is an antioxidant found in fruits and vegetables. Scientific evidence suggests vitamin C lowers the risk of developing cataracts vitamin C sources are oranges, grapefruit, strawberries and papaya, as well as green peppers and tomatoes. ಪಪಾಯ ಟೊಮೇಟೊ ದ್ರಾಕ್ಷಿ ಕೆತ್ಥಲೇ ಹಣ್ಣು

Slide 16:

Vitamin E found in nuts, fortified cereals, sweet potatoes nuts and seeds, vegetable oils (including sunflower and corn oil), almonds and sunflower seeds. It protect cells of the eyes from damage caused by unstable molecules called free radicals which break down healthy tissue.

Slide 17:

Fats Two omega-3 fatty acids have been shown to be important for proper visual development and retinal function. Fish oil and some nuts (walnuts) and vegetable oils ( soybean, olive)

Slide 18:

Adding powerful antioxidants to your diet  improves your eye health.

Slide 19:

Spinach and other dark leafy greens are the healthiest foods for the eyes because they naturally contain large amounts of lutein and zeaxanthin .

Tips for good eye health:

Tips for good eye health Have regular eye examination Eat healthy diet – low fat rich in vegetables, nuts and fruits If you have glasses wear them regularly Stop smoking Protect your eyes from sun – wear UV protection sunglasses

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