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Hidden danger in the classroom?

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    Classrooms across the country are getting a facelift with gadgets like smart boards, computers and tablets. Could all this screen time be harming your...

  • Duration 1:51
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-- thirteen year old Casey Connolly comes home from school.

She complains her eyes feel tired -- and -- them all day nonstop.

Taking testing.

Just looking at the -- -- looking at Smart boards and we use computers a lot for -- type thing but we are getting ipads and keeping.

And that'll hold our tax bucks so we'll be doing a lot of comments.

While technology is revolutionizing the classroom.

Doctor -- thought of the American opt to metric association says computers Smart boards and tablets.

Could sense of students to the -- -- Computer vision syndrome as a whole host of symptoms that are related to computer use.

It includes I strained blurred vision headaches loss of focus -- of attention.

-- paying double vision -- -- says looking at a computer screen actually tricks arise.

Which causes strain and critique.

When we look at a computer screen presents -- unique visual demand on the guys.

Because they're looking at something up close and it's not and 3-D it's flat it's glowing -- sort of tricks the -- into thinking something is closer than it really is and often sets up an imbalance between the eye coordination and focusing.

There are few easy steps -- just -- take to prevent computer vision syndrome every twenty minutes -- the 22 -- -- by looking at something at least twenty feet away.

Don't forget to -- most people stare when that looking at computers and blinking is really important to restore the tear -- Also make sure your computer screen is at least fortified inches below eye level that is the center of the screen should be at least what five inches below -- level.

So you're looking down into the screen another good way to look look at that estimate for the top of the monitor is at a high level -- work together better in -- down gays.

And most importantly doctor -- says every child should have a comprehensive eye exam at the beginning of the school year.

I am Dr.

Manny Fox News.