1. Page 48 8th Grade, September 2010 Healthy Eyes & Ears DO NOW: Draw or trace “The Eye” Figure 2.12, p48. Show some detail. WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 13 Lesson

2. 80%... WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem 15 Healthy Eyes & Ears …of your knowledge is gathered through your eyes. S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see?

3. Eyes Can… WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Distinguish shapes - Identify color(s) - Detect movement - Absorb light S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

4. The Eye Page 48 WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem LENS Allows light to join CORNEA Lets light in IRIS Color of eyes PUPIL Controls light AQUEOUS HUMOR Watery fluid maintaining pressure RETINA Network of nerves OPTIC NERVE Carries messages to brain SCLERA White of the eye S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

5. The Eye… WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem …does NOT see objects. It sees the light that objects give off. S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

6. Rods & Cones WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem INSIDE THE RETINA… - RODS: Nerve endings that distinguish black, white & motion distinguish black, white & motion - CONES: Nerve endings that distinguish colors. distinguish colors. S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

7. How The Eye Sees WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem 1. Light enters thru pupil 2. Lens focuses light onto retina. Image upside-down 3. Retina changes light to elect. messages 4. Optic Nerve sends msgs. to brain 5. Brain interprets & corrects image. S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

8. Eyecare Tips WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Read, watch TV in good lighting - Avoid UV exposure - Avoid rubbing eyes - Take breaks from using eyes - Protective goggles as needed - Do not touch eyeball & avoid old or dirty makeup old or dirty makeup S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

9. Sunglasses WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Block 99-100% of UV rays - Screen out 75% of light - Gray, green or brown lenses - When trying on, shouldn’t see your eyes easily your eyes easily S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

10. Eye Problems WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Farsightedness See clearly far away. See clearly far away. Images focus behind retina. Images focus behind retina. - Nearsightedness See clearly close up. See clearly close up. Images focus ahead of retina. Images focus ahead of retina. - Astigmatism Images blurred. Images blurred. Images meet at several points. Images meet at several points. S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

11. Glaucoma WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem Eye disease in which eye fluid does not drain properly. S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

12. Cataracts WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem Clouding of lens causing vision loss. Usually found in the elderly. S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

13. Eye Exams WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Yearly exam if you wear glasses - If not, every 2 years - Visit an Optometrist or Ophthalmologist Ophthalmologist S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

14. Your Ears WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Help keep your body in balance in balance - Allow you to experience sound sound S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

15. The Ear WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem Eardrum Hammer Anvil Stirrup Oval Window Semicircular Canals Cochlea Auditory Nerve Vestibule Eustachian Tube S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

16. Ear Parts WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Eustachian Tube: allows air between nose & middle ear, providing equal air pressure middle ear, providing equal air pressure - Vestibule: lined with hair, essential to hearing - Semicircular Canals: responsible for balance - Cochlea: snail-like structure, it carries messages to the brain messages to the brain S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

17. Ear Care WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Wear ear protection as needed - Avoid loud noise/sounds - Clean outer ear - No sharp objects - Earmuffs in cold weather S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

18. Hearing Damage WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem - Over 120 Decibels: serious damage can occur serious damage can occur - Over 70 Decibels: can harm hearing can harm hearing S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears

19. Decibel Levels WORD WALL Lens Cornea - Pupil Iris - Sclera Optic Nerve Retina - Vestibule Semicircular Canals Cochlea Auditory Nerve Callus - Corn Blister - Bunion Athlete’s Foot Mental Health Personality Values Self-concept Self-Esteem 160 140 120 100 80 60 40 20 0 Decibels Lawn mower Auto Rock Concert Jet Engine - S TANDARD HE8.7: Practice health-enhancing behaviors and avoid or reduce health risks. (b) personal examples of healthy behaviors that maintain or improve health. EQ: How does the eye see? 15 Healthy Eyes & Ears