how much time should i use screen in total if i have specs of -2 ? ( i have online classes of 5 hours ) ?
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Answer:
you should have 3 breaks total to reduce screen time
Explanation:
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specs of -2 is not a critical number but precaution is better than cure.
So , 5 hours is the maximum you should expose ur eyes to the radiation but if it goes 1 or 2 hours high it's fine but keeping it below 5 hours will help you much
You can also try using the blue light filter or the blue light spectacle which reduces intensity of the blue light .
Honestly , most schools around me have online causes of just 3 to 4 hours
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