1) what is the normal hours of working . a) 2-3 b) 3-4 c) 4-5 d) 5-6 2) A serious injury that affect your eyes if you spend a lot of time on your desktop .is a example of ___________. a) eye strain b) wrist and joint injury c) back injury 3) A pain can be caused when you put a lot of work on your hand .is a example of __________. a) Back pain injuries b) Eye strain c) wrist and joint injury 4) How to prevent eye strain issue. a) you can after each 25 minutes of working you can take of your eyes of the screen and see the wall for couple of seconds b) keep watching the screen without letting your eyes out of the screen. c) don't do anything 5) rate us out of 5 . a) 1 b) 2 c) 3 d) 4 e) 5

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