2. The computer for *Worker---essential thing to work *Student---essential tool for gain knowledge *Us--- essential tool for entertainment

3. We must protect ourselves from the potential hazard by spending too much of time in front of computer..If not…

5. Physical Health which is affected by computer usages

6. Repetitive Stress Injuries

7. Other names: Occupational Overuse Syndrome (OOS) Cumulative Trauma Disorder (CTD) Repetitive Motion Syndrom (RMS) Causes A constant stress and repeating the strain on the joints can cause permanent damage without chance of recovery.

8. This is the body part where the repetitive stress injuries easy to occur

9. Back pain

10. Overuse of muscles Factor muscle spasms, cramping, stiffness pain which may vary in many aspects symptoms

11. Lower Back Pain Exercises: Stretches Yoga

12. Eye strain

13. SYMPTOMS Blurred vision; red eyes Flickering lights Migraine or a bad headache Increased fatigue Badly stiff shoulders; an incredible pain neck

14. Ways to cure Take frequent breaks. Let your eyes rest Do some exercises Check the lighting Blink more often Adjust monitor setting

15. We should apply the posture showed in the next slide to prevent this sickness.

17. References http://blog.ziggytek.com/2011/01/18/sitting- in-front-of-a-screen-all-day-may-shorten- your-life/ http://blog.ziggytek.com/2011/01/18/sitting- in-front-of-a-screen-all-day-may-shorten- your-life/ http://parentingteens.com/blog/2010/10/30/t een-rsi-%E2%80%93-repetitive-stress- injuries/ http://parentingteens.com/blog/2010/10/30/t een-rsi-%E2%80%93-repetitive-stress- injuries/ http://ergonomics.about.com/od/recentlydiag nosed/tp/10diagstress.htm http://ergonomics.about.com/od/recentlydiag nosed/tp/10diagstress.htm http://www.cascadewellnessclinic.com/sports /rsi.shtml http://www.cascadewellnessclinic.com/sports /rsi.shtml

18. http://www.lowerbackpainexercise.net/ http://www.worldstart.com/five-ways-to- eliminate-eyestrain/ http://www.worldstart.com/five-ways-to- eliminate-eyestrain/ http://23physio.in/exercise-to-avoid- eyestrain/ http://23physio.in/exercise-to-avoid- eyestrain/ http://www.yewboon.com/?p=205