- Do not eat or drink near computers, run or play near them, or operate them during storms. Do not open casings or insert metal objects. - Take frequent breaks when using computers, use antiglare screens, and blink eyes regularly to prevent eye strain. - Adopt proper posture, take regular breaks, and use back supports and footrests to prevent back and wrist pain from prolonged computer use.

1. RECAP – SOME COMPUTER SAFETY
GUIDELINES AT HOME AND IN COMPUTER LAB
• Do not eat and drink near computers.
• Do not run and play near computers.
• Do not operate computers during
heavy rainfall and thunder storm.
• Do not open system or monitor casing.
• Do not insert any metal objects

2. SYLLABUS AND LEARNING OBJECTIVES
Learning Objectives:
 Explain what health problem is.
 Identify the different health problems.
 How these problems can be
minimised.

3. HEALTH PROBLEMS RELATED
TO THE USE OF COMPUTERS
If computers are not used
properly, a lot of health
problems may arise
and
these problems may be
avoided if people use
computers appropriately.

4. Do you use computer regularly.
What health problems did you get
while working with a computer.

5. HEALTH PROBLEMS
EYE STRAIN BACK
ACHE
WRIST PAIN

6. EYE STRAIN
CAUSES
 Insufficient breaks
 Prolonged or excessive use
 Glare (brightness) from the screen
 Reflection on the screen (sunlight)
PRECAUTIONS:
 Take frequent breaks
 Use antiglare screen
 Use curtains on windows
 Blink the eyes regularly
 Eyes must be in line with monitor

7. BACK ACHE & WRIST PAIN
CAUSES:
• Wrong posture
• Excessive use
PRECAUTIONS:
• Take regular breaks.
• Adopt the right posture and use back
rest.
• Use footrests and adjustable chairs

8. WHAT IS RSI?
Repetitive strain injuries (RSIs)
are "injuries may be caused by
repetitive tasks, forceful exertions,
or awkward positions".
It is a collective name for a variety
of disorders affecting the neck, the
shoulders and upper limbs.

9. THE POSTURE TO ADOPT WHILE USING A PC

10. SUMMARY
10

11. TRUE AND FALSE
1. One cause of RSI is typing for long periods of
time without rest. _______
2. Using a monitor that faces the window
without curtain will cause eye strain._______
3. It is not important to take regular break while
using a PC. _______
4. RSI stands for Repetitive Stress Illness.
_______
5. Adopting the right posture while using the
computer will reduce back pain. _______

12. QUESTION 2
a. State two health problems associated
to the use of computers.
b. For each above mentioned health
problems, state two precautions that
can be taken to reduce these health
problems.