Transcript Healthy Eyes and Ears

Healthy Eyes and Ears
List the ways your eyes and ears
help you understand your
environment:
-
Recognize friends
Read books
Hear people
Listen to favorite music
Words to Know!
• Nearsighted- you can see near objects, but
distant objects appear blurry.
• Farsighted- you can see far object clearly, but
closer object appear blurry.
• Astigmatism- the shape of your cornea or lens
causes person’s vision blurry.
Parts of the Eye
• Optic – is the nerve that carries messages to
the brain
• Sclera – is the covering that protects the eye
from the inside
• Cornea – it lets the light in
• Iris – it gives color to the eye
Parts of the Eye
• Pupil – it controls amount of light going in to
the eye
• Lens – it focuses the image
• Retina – it changes light rays into images that
your eyes can see
Taking Care of Your Eyes
• Protect your eyes from eyestrain
- read in well-lighted room
• Protect your eyes from injury
- use protective gear for eyes
• Protect your eyes from infection
- do not rub your eyes
• Get regular checkups
Vision Problems
• Nearsighted- you can see near objects, but
distant objects appear blurry
• Farsighted- you can see far object clearly, but
closer object appear blurry
• Astigmatism- the shape of your cornea or lens
causes a wavy or blurred image
Correcting Vision Problems
• Eyeglasses
• Contact lenses
• Laser surgery
Healthy Ears
Words to know!
• Sound waves- are vibrations or movement in
the air
• Decibels- the measurement of loudness of
sound waves
Parts of the Ear
• Outer ear – it collects the sound waves
• Middle ear – sound waves vibrate the ear
drum and sends vibrations to cochlea
• Inner ear – cochlea sends messages to the
brain for interpretation
Taking Care of Your Ears
One important way to take care of your ears is
to protect them from loud noises.
Ear Problems
• The most common ear problem is infection of
the middle ear
• The most serious problems are hearing loss
and deafness
• A total hearing loss can result from ear injury,
disease, or birth defects
Closure
Summarize ways to care for your eyes and
ears.