Read book from safe distance (approximately 30 cm from eyes). Reading books from a shorter or longer distance may strain your eyes. Do not sit continuously in front of book/laptop/desktop. Take a break of 5 minutes after 1 hour reading. If your are wearing spectacle (as per doctors recommendation), then check your vision once in a year. Clear your spectacle regularly as dust deposited on it may hinder your vision and there may be bacterial growth around the deposited dirt. If you get scratches on lens of spectacle, then change the lens otherwise it may strain your eye. Do not touch your eyes with dirty hands and you may get infection. If dust fall on eye, then wash your eye, do not rub as it may damage your eye.
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